121276822057 has 4 divisors (see below), whose sum is σ = 121277523456. Its totient is φ = 121276120660.

The previous prime is 121276822021. The next prime is 121276822067. The reversal of 121276822057 is 750228672121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 121276822057 - 2⁷ = 121276821929 is a prime.

It is a super-2 number, since 2×121276822057² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121276822067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113268 + ... + 505354.

It is an arithmetic number, because the mean of its divisors is an integer number (30319380864).

Almost surely, 2^121276822057 is an apocalyptic number.

It is an amenable number.

121276822057 is a deficient number, since it is larger than the sum of its proper divisors (701399).

121276822057 is an equidigital number, since it uses as much as digits as its factorization.

121276822057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701398.

The product of its (nonzero) digits is 188160, while the sum is 43.

The spelling of 121276822057 in words is "one hundred twenty-one billion, two hundred seventy-six million, eight hundred twenty-two thousand, fifty-seven".