U+2169 "Ⅹ" Roman Numeral Ten Unicode Character
U+2169 "Ⅹ" Roman Numeral Ten is a typographic representation of the number ten, used in the traditional Roman numeral system where it corresponds to the Latin letter X, but with a specific double-struck or serifed appearance distinct from a standard uppercase X to denote its numeric and cultural function. This character is part of the Number Forms Unicode block, primarily designed to ensure consistent display and processing of ancient Roman numerals in digital text, such as in clocks, outlines, legal documents, and historical references. Its inclusion in Unicode supports preservation and cross-platform compatibility for symbols that might otherwise be lost or misinterpreted when using simple ASCII characters, helping to maintain clarity in contexts where the Roman numeral must be recognized as a number rather than a letter.
General Properties
| Code Point | U+2169 |
| Version Added | 1.1 |
| Name | Roman Numeral Ten |
| Block | Number Forms |
| General Category | Letter Number |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Compat |
| Decomposition Mapping | "X" U+0058 Latin Capital Letter X |
Encodings
| HTML Decimal Encoding | Ⅹ |
| HTML Hex Encoding | Ⅹ |
| UTF-8 Encoding | 0xE2 0x85 0xA9 |
| UTF-16 Encoding | 0x2169 |
| UTF-32 Encoding | 0x00002169 |
| C/C++/Java Escape | \u2169 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| Numeric Type | Numeric |
| Numeric Value | 10 |
| Line Break | Ambiguous (Alphabetic or Ideographic) |
| East Asian Width | Ambiguous |
| Uppercase | Yes |
| Other Uppercase | Yes |
| Simple Lowercase Code Point | "ⅹ" U+2179 Small Roman Numeral Ten |
| Lowercase Code Point | "ⅹ" U+2179 Small Roman Numeral Ten |
| Simple Case Folding | "ⅹ" U+2179 Small Roman Numeral Ten |
| Case Folding | "ⅹ" U+2179 Small Roman Numeral Ten |
| Cased | Yes |
| Changes When Casefolded | Yes |
| Changes When Casemapped | Yes |
| Changes When Lowercased | Yes |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "x" U+0078 Latin Small Letter X |
| NFKC Simple Casefold | "x" U+0078 Latin Small Letter X |
| Script | Latin |
| Script Extensions | Latin |
| Indic Syllabic Category | Other |
| ID Start | Yes |
| XID Start | Yes |
| ID Continue | Yes |
| XID Continue | Yes |
| Alphabetic | Yes |
| Vertical Orientation | Upright |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Alphabetic letter |
| Sentence Break | Upper |