This character is a Other Symbol and is mainly used in the Katakana script.
The glyph is a circle version of the glyph Katakana Letter I. Its East Asian Width is wide. In bidirectional text it is written from left to right. When changing direction it is not mirrored. This katakana joins with other adjacent katakana to form a word. U+32D1 offers a line break opportunity at its position, except in some numeric contexts.
The Wikipedia has the following information about this codepoint:
I (い in hiragana or イ in katakana) is one of the Japanese kana each of which represents one mora. い is based on the sōsho style of the kanji character 以, and イ is from the radical (left part) of the kanji character 伊. In the modern Japanese system of sound order, it occupies the second position of the mora chart, between あ and う. Additionally, it is the first letter in Iroha, before ろ. Both represent the sound [i]. In the Ainu language, katakana イ is written as y in their Latin-based mora chart, and a small ィ after another katakana represents a diphthong.
Representations
System
Representation (click value to copy)
Nº
13009
UTF-8
E3 8B 91
UTF-16
32 D1
UTF-32
00 00 32 D1
URL-Quoted
%E3%8B%91
HTML hex reference
㋑
Wrong windows-1252 Mojibake
ã‹‘
Encoding: EUC_JIS_2004 (hex bytes)
AC DC
Encoding: EUC_JISX0213 (hex bytes)
AC DC
Encoding: GB18030 (hex bytes)
81 39 D1 37
Encoding: ISO2022_JP_2004 (hex bytes)
1B 24 28 51 2C 5C 1B 28 42
Encoding: ISO2022_JP_3 (hex bytes)
1B 24 28 4F 2C 5C 1B 28 42
Encoding: SHIFT_JIS_2004 (hex bytes)
86 DA
Encoding: SHIFT_JISX0213 (hex bytes)
86 DA
RFC 5137
\u'32D1'
Bash and Zsh inside echo -e
\u32D1
C and C++
\u32D1
C#
\u32D1
CSS
\0032D1
Excel
=UNICHAR(13009)
Go
\u32D1
JavaScript
\u32D1
Modern JavaScript since ES6
\u{32d1}
JSON
\u32D1
Java
\u32D1
Lua
\u{32D1}
Matlab
char(13009)
Perl
"\x{32D1}"
PHP
\u{32d1}
PostgreSQL
U&'\32D1'
PowerShell
`u{32D1}
Python
\u32D1
Ruby
\u{32d1}
Rust
\u{32d1}
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