Code point
U+1F181
Glyph appearance depends on your fonts.
U+1F181
SoU+1F181 NEGATIVE SQUARED LATIN CAPITAL LETTER R is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the Enclosed Alphanumeric Supplement block.
Choose the representation you need, then copy its value.
U+1F181
127361
🆁
🆁
F0 9F 86 81
D83C DD81
0001F181
%F0%9F%86%81
\U0001F181
\u{1F181}
\uD83C\uDD81
\1F181