121164777 has 12 divisors (see below), whose sum is σ = 175278064. Its totient is φ = 80655480.

The previous prime is 121164707. The next prime is 121164781. The reversal of 121164777 is 777461121.

121164777 is a `hidden beast` number, since 1 + 2 + 1 + 1 + 647 + 7 + 7 = 666.

It is not a de Polignac number, because 121164777 - 2⁸ = 121164521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121164707) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3523 + ... + 15960.

Almost surely, 2^121164777 is an apocalyptic number.

It is an amenable number.

121164777 is a deficient number, since it is larger than the sum of its proper divisors (54113287).

121164777 is a wasteful number, since it uses less digits than its factorization.

121164777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20180 (or 20177 counting only the distinct ones).

The product of its digits is 16464, while the sum is 36.

The square root of 121164777 is about 11007.4873154594. The cubic root of 121164777 is about 494.8331607920.

The spelling of 121164777 in words is "one hundred twenty-one million, one hundred sixty-four thousand, seven hundred seventy-seven".