1222097957 has 2 divisors, whose sum is σ = 1222097958. Its totient is φ = 1222097956.

The previous prime is 1222097953. The next prime is 1222097983. The reversal of 1222097957 is 7597902221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1212850276 + 9247681 = 34826^2 + 3041^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222097957 - 2² = 1222097953 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222097953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611048978 + 611048979.

It is an arithmetic number, because the mean of its divisors is an integer number (611048979).

Almost surely, 2^1222097957 is an apocalyptic number.

It is an amenable number.

1222097957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222097957 is an equidigital number, since it uses as much as digits as its factorization.

1222097957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158760, while the sum is 44.

The square root of 1222097957 is about 34958.5176602212. The cubic root of 1222097957 is about 1069.1418737736.

The spelling of 1222097957 in words is "one billion, two hundred twenty-two million, ninety-seven thousand, nine hundred fifty-seven".