Code point
U+2320
Glyph appearance depends on your fonts.
U+2320
SmU+2320 TOP HALF INTEGRAL is a Unicode 16.0.0 character in the Math Symbol category. It belongs to the Miscellaneous Technical block.
Choose the representation you need, then copy its value.
U+2320
8992
⌠
⌠
E2 8C A0
2320
00002320
%E2%8C%A0
\u2320
\u2320
\u2320
\2320