As character names:

U+FD21 ARABIC LIGATURE SAD WITH ALEF MAKSURA FINAL FORM character (ﴡ)

As raw characters:

ﴡ

As a string of HTML entities:

ﴡ

Decoder output:

Byte number 1 is decimal 240, hex 0xF0, octal \360, binary 11110000
This is the first byte of a 4 byte sequence.

Byte number 2 is decimal 143, hex 0x8F, octal \217, binary 10001111
This is continuation byte 1, expecting 2 more.

Byte number 3 is decimal 180, hex 0xB4, octal \264, binary 10110100
This is continuation byte 2, expecting 1 more.

Byte number 4 is decimal 161, hex 0xA1, octal \241, binary 10100001
This is continuation byte 3, expecting 0 more.

U+FD21	ARABIC LIGATURE SAD WITH ALEF MAKSURA FINAL FORM
	# <final> 0635 0649