77912220102212 has 12 divisors (see below), whose sum is σ = 140744655668736. Its totient is φ = 37699461339720.

The previous prime is 77912220102191. The next prime is 77912220102217. The reversal of 77912220102212 is 21220102221977.

It is not an unprimeable number, because it can be changed into a prime (77912220102217) 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, 314162177708 + ... + 314162177955.

It is an arithmetic number, because the mean of its divisors is an integer number (11728721305728).

Almost surely, 2^{77912220102212} is an apocalyptic number.

It is an amenable number.

77912220102212 is a deficient number, since it is larger than the sum of its proper divisors (62832435566524).

77912220102212 is a wasteful number, since it uses less digits than its factorization.

77912220102212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628324355698 (or 628324355696 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 38.

The spelling of 77912220102212 in words is "seventy-seven trillion, nine hundred twelve billion, two hundred twenty million, one hundred two thousand, two hundred twelve".