| Name | PARENTHESIZED IDEOGRAPH ONE |
| Unicode Version | 1.1 |
| Block（ブロック） | Enclosed CJK Letters and Months（囲みCJK文字・月） |
| Plane（面） | Basic Multilingual Plane（基本多言語面） |
| Script | |
| Category | |
| Bidirectional Class | |
| Combining Class | |
| Character is Mirrored | |
| HTML Entity | ㈠ ㈠ |
| UTF-8 Encoding | ㈠ e388a0 |
| UTF-16 Encoding | ㈠ 3220 |
| UTF-32 Encoding | ㈠ 00003220 |