222102857 has 2 divisors, whose sum is σ = 222102858. Its totient is φ = 222102856.

The previous prime is 222102779. The next prime is 222102899. The reversal of 222102857 is 758201222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124902976 + 97199881 = 11176^2 + 9859^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222102857 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (222102557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111051428 + 111051429.

It is an arithmetic number, because the mean of its divisors is an integer number (111051429).

Almost surely, 2^222102857 is an apocalyptic number.

It is an amenable number.

222102857 is a deficient number, since it is larger than the sum of its proper divisors (1).

222102857 is an equidigital number, since it uses as much as digits as its factorization.

222102857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 222102857 is about 14903.1156809575. The cubic root of 222102857 is about 605.5983943521.

The spelling of 222102857 in words is "two hundred twenty-two million, one hundred two thousand, eight hundred fifty-seven".