79102211021 has 8 divisors (see below), whose sum is σ = 82815778080. Its totient is φ = 75454370992.

The previous prime is 79102211017. The next prime is 79102211033. The reversal of 79102211021 is 12011220197.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79102211021 - 2² = 79102211017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79102211011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16429295 + ... + 16434108.

It is an arithmetic number, because the mean of its divisors is an integer number (10351972260).

Almost surely, 2^79102211021 is an apocalyptic number.

It is an amenable number.

79102211021 is a deficient number, since it is larger than the sum of its proper divisors (3713567059).

79102211021 is a wasteful number, since it uses less digits than its factorization.

79102211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32863515.

The product of its (nonzero) digits is 504, while the sum is 26.

The spelling of 79102211021 in words is "seventy-nine billion, one hundred two million, two hundred eleven thousand, twenty-one".