121127941977 has 64 divisors (see below), whose sum is σ = 194774630400. Its totient is φ = 65505464640.

The previous prime is 121127941933. The next prime is 121127942029. The reversal of 121127941977 is 779149721121.

It is not a de Polignac number, because 121127941977 - 2⁸ = 121127941721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121127941877) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6052774 + ... + 6072752.

It is an arithmetic number, because the mean of its divisors is an integer number (3043353600).

Almost surely, 2^121127941977 is an apocalyptic number.

It is an amenable number.

121127941977 is a deficient number, since it is larger than the sum of its proper divisors (73646688423).

121127941977 is a wasteful number, since it uses less digits than its factorization.

121127941977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20226.

The product of its digits is 444528, while the sum is 51.

The spelling of 121127941977 in words is "one hundred twenty-one billion, one hundred twenty-seven million, nine hundred forty-one thousand, nine hundred seventy-seven".