222222223

222,222,223 is a nine-digit integer in decimal notation. It is written as eight consecutive 2s followed by a 3.

Numerical properties: It is odd and not divisible by 3 or 5. The digit sum is 19. It can be expressed as 2 times 111,111,111 plus 1, tying it to the repunit with nine ones.

Context and uses: In mathematics and computer science, numbers with repeated digits are often used as test values in formatting, parsing, and performance benchmarks. 222,222,223 occasionally appears in datasets and examples due to its distinctive pattern, but it has no widely noted mathematical significance beyond its relation to 111,111,111.

See also: 111,111,111; 222,222,222; repunits.