78912202222 has 64 divisors (see below), whose sum is σ = 145488752640. Its totient is φ = 31369700736.

The previous prime is 78912202217. The next prime is 78912202223. The reversal of 78912202222 is 22220221987.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78912202223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1625688 + ... + 1673524.

It is an arithmetic number, because the mean of its divisors is an integer number (2273261760).

Almost surely, 2^78912202222 is an apocalyptic number.

78912202222 is a deficient number, since it is larger than the sum of its proper divisors (66576550418).

78912202222 is a wasteful number, since it uses less digits than its factorization.

78912202222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48025.

The product of its (nonzero) digits is 32256, while the sum is 37.

The spelling of 78912202222 in words is "seventy-eight billion, nine hundred twelve million, two hundred two thousand, two hundred twenty-two".