U+0002, 
<control-0002>
(Abbreviation: STX)
[unassigned: U+0000–U+0001][unassigned: U+0003–U+001F]
Basic Latin
[U+0020]
Presentations of 2︎
Text
style
Emoji
style
2︎ 2️
Note: Character's appearance
may be different on each system.
Text style is forced with &#xFE0E;
and emoji style with &#xFE0F;

Emoji