1210120957 has 2 divisors, whose sum is σ = 1210120958. Its totient is φ = 1210120956.

The previous prime is 1210120937. The next prime is 1210120997. The reversal of 1210120957 is 7590210121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1190664036 + 19456921 = 34506^2 + 4411^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1210120957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1210120907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605060478 + 605060479.

It is an arithmetic number, because the mean of its divisors is an integer number (605060479).

Almost surely, 2^1210120957 is an apocalyptic number.

It is an amenable number.

1210120957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210120957 is an equidigital number, since it uses as much as digits as its factorization.

1210120957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 1210120957 is about 34786.7928530355. The cubic root of 1210120957 is about 1065.6377430352.

The spelling of 1210120957 in words is "one billion, two hundred ten million, one hundred twenty thousand, nine hundred fifty-seven".