79221211012 has 12 divisors (see below), whose sum is σ = 146792244060. Its totient is φ = 37280569856.

The previous prime is 79221210979. The next prime is 79221211067. The reversal of 79221211012 is 21011212297.

It can be written as a sum of positive squares in 2 ways, for example, as 71003063296 + 8218147716 = 266464^2 + 90654^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 582508837 + ... + 582508972.

It is an arithmetic number, because the mean of its divisors is an integer number (12232687005).

Almost surely, 2^79221211012 is an apocalyptic number.

It is an amenable number.

79221211012 is a deficient number, since it is larger than the sum of its proper divisors (67571033048).

79221211012 is a wasteful number, since it uses less digits than its factorization.

79221211012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165017830 (or 1165017828 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 28.

The spelling of 79221211012 in words is "seventy-nine billion, two hundred twenty-one million, two hundred eleven thousand, twelve".