Letterlike Symbols: Double-Struck N-Ary Summation

⅀

U+2140

⅀

Noto text font

Plane: 0 (Basic Multilingual)
Block: Letterlike Symbols
Unicode Version: 3.2

UTF-32BE: 00 00 21 40
UTF-32LE: 40 21 00 00
UTF-16BE: 21 40
UTF-16LE: 40 21
UTF-8: E2 85 80

Character Escapes

HTML5: ⅀; ⅀
C: \u2140 (C99); \U002140 (C99)
C++: \u{2140} (C++23); \U00002140; \u2140
Java: \u2140
JavaScript: \u{2140}; \u2140
CSS: \2140; \002140
Quoted-Printable: =E2=85=80
URL: %E2%85%80