121297264531957 has 2 divisors, whose sum is σ = 121297264531958. Its totient is φ = 121297264531956.

The previous prime is 121297264531939. The next prime is 121297264531999. The reversal of 121297264531957 is 759135462792121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114446476537156 + 6850787994801 = 10697966^2 + 2617401^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121297264531957 is a prime.

It is a super-2 number, since 2×121297264531957² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121297264531657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60648632265978 + 60648632265979.

It is an arithmetic number, because the mean of its divisors is an integer number (60648632265979).

Almost surely, 2^{121297264531957} is an apocalyptic number.

It is an amenable number.

121297264531957 is a deficient number, since it is larger than the sum of its proper divisors (1).

121297264531957 is an equidigital number, since it uses as much as digits as its factorization.

121297264531957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57153600, while the sum is 64.

The spelling of 121297264531957 in words is "one hundred twenty-one trillion, two hundred ninety-seven billion, two hundred sixty-four million, five hundred thirty-one thousand, nine hundred fifty-seven".