This character is a Other Letter and is mainly used in the Han script. The Unihan Database defines it as number two. Its Pīnyīn pronunciation is èr. The codepoint has the numeric value 2.
The glyph is not a composition. Its East Asian Width is wide. In bidirectional text it is written from left to right. When changing direction it is not mirrored. U+5F10 offers a line break opportunity at its position, except in some numeric contexts.
The Wikipedia has the following information about this codepoint:
The Japanese numerals are numerals that are used in Japanese. In writing, they are the same as the Chinese numerals, and large numbers follow the Chinese style of grouping by 10,000. Two pronunciations are used: the Sino-Japanese (on'yomi) readings of the Chinese characters and the Japanese yamato kotoba (native words, kun'yomi readings).
Representations
System
Representation (click value to copy)
Nº
24336
UTF-8
E5 BC 90
UTF-16
5F 10
UTF-32
00 00 5F 10
URL-Quoted
%E5%BC%90
HTML hex reference
弐
Wrong windows-1252 Mojibake
å¼
Encoding: CP932 (hex bytes)
93 F3
Encoding: EUC_JP (hex bytes)
C6 F5
Encoding: EUC_JIS_2004 (hex bytes)
C6 F5
Encoding: EUC_JISX0213 (hex bytes)
C6 F5
Encoding: GBK (hex bytes)
8F 72
Encoding: GB18030 (hex bytes)
8F 72
Encoding: ISO2022_JP (hex bytes)
1B 24 42 46 75 1B 28 42
Encoding: ISO2022_JP_1 (hex bytes)
1B 24 42 46 75 1B 28 42
Encoding: ISO2022_JP_2 (hex bytes)
1B 24 42 46 75 1B 28 42
Encoding: ISO2022_JP_2004 (hex bytes)
1B 24 42 46 75 1B 28 42
Encoding: ISO2022_JP_3 (hex bytes)
1B 24 42 46 75 1B 28 42
Encoding: ISO2022_JP_EXT (hex bytes)
1B 24 42 46 75 1B 28 42
Encoding: SHIFT_JIS (hex bytes)
93 F3
Encoding: SHIFT_JIS_2004 (hex bytes)
93 F3
Encoding: SHIFT_JISX0213 (hex bytes)
93 F3
Pīnyīn
èr
RFC 5137
\u'5F10'
Bash and Zsh inside echo -e
\u5F10
C and C++
\u5F10
C#
\u5F10
CSS
\005F10
Excel
=UNICHAR(24336)
Go
\u5F10
JavaScript
\u5F10
Modern JavaScript since ES6
\u{5f10}
JSON
\u5F10
Java
\u5F10
Lua
\u{5F10}
Matlab
char(24336)
Perl
"\x{5F10}"
PHP
\u{5f10}
PostgreSQL
U&'\5F10'
PowerShell
`u{5F10}
Python
\u5F10
Ruby
\u{5f10}
Rust
\u{5f10}
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