As character names:

U+25CB WHITE CIRCLE 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 151, hex 0x97, octal \227, binary 10010111
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 139, hex 0x8B, octal \213, binary 10001011
This is continuation byte 2, expecting 0 more.

U+25CB	WHITE CIRCLE
	x (combining enclosing circle - 20DD)
	x (large circle - 25EF)
	x (heavy circle - 2B58)
	x (ideographic number zero - 3007)
	x (full moon symbol - 1F315)