121157162712 has 24 divisors (see below), whose sum is σ = 328133982540. Its totient is φ = 40385720880.

The previous prime is 121157162669. The next prime is 121157162719. The reversal of 121157162712 is 217261751121.

It is a happy number.

121157162712 is a `hidden beast` number, since 1 + 2 + 1 + 15 + 7 + 1 + 627 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121157162719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 841369114 + ... + 841369257.

Almost surely, 2^121157162712 is an apocalyptic number.

121157162712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121157162712 is an abundant number, since it is smaller than the sum of its proper divisors (206976819828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121157162712 is a wasteful number, since it uses less digits than its factorization.

121157162712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682738383 (or 1682738376 counting only the distinct ones).

The product of its digits is 11760, while the sum is 36.

The spelling of 121157162712 in words is "one hundred twenty-one billion, one hundred fifty-seven million, one hundred sixty-two thousand, seven hundred twelve".