As character names:

U+2205 EMPTY SET character (∅)

As raw characters:

∅

As a string of HTML entities:

∅

Decoder output:

Byte number 1 is decimal 226, hex 0xE2, octal \342, binary 11100010
This is the first byte of a 3 byte sequence.

Byte number 2 is decimal 136, hex 0x88, octal \210, binary 10001000
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 133, hex 0x85, octal \205, binary 10000101
This is continuation byte 2, expecting 0 more.

U+2205	EMPTY SET
	= null set
	* used in linguistics to indicate a null morpheme or phonological "zero"
	x (latin capital letter o with stroke - 00D8)
	x (diameter sign - 2300)
	~ 2205 FE00 zero with long diagonal stroke overlay form