222759961 has 2 divisors, whose sum is σ = 222759962. Its totient is φ = 222759960.

The previous prime is 222759919. The next prime is 222759967. The reversal of 222759961 is 169957222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220700736 + 2059225 = 14856^2 + 1435^2 .

It is a cyclic number.

It is not a de Polignac number, because 222759961 - 2⁷ = 222759833 is a prime.

It is not a weakly prime, because it can be changed into another prime (222759967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111379980 + 111379981.

It is an arithmetic number, because the mean of its divisors is an integer number (111379981).

Almost surely, 2^222759961 is an apocalyptic number.

It is an amenable number.

222759961 is a deficient number, since it is larger than the sum of its proper divisors (1).

222759961 is an equidigital number, since it uses as much as digits as its factorization.

222759961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 43.

The square root of 222759961 is about 14925.1452589246. The cubic root of 222759961 is about 606.1950388266.

The spelling of 222759961 in words is "two hundred twenty-two million, seven hundred fifty-nine thousand, nine hundred sixty-one".