79101010221 has 16 divisors (see below), whose sum is σ = 108894220800. Its totient is φ = 51021653760.

The previous prime is 79101010213. The next prime is 79101010237. The reversal of 79101010221 is 12201010197.

It is not a de Polignac number, because 79101010221 - 2³ = 79101010213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79101010191 and 79101010200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79101010201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340881 + ... + 523833.

It is an arithmetic number, because the mean of its divisors is an integer number (6805888800).

Almost surely, 2^79101010221 is an apocalyptic number.

It is an amenable number.

79101010221 is a deficient number, since it is larger than the sum of its proper divisors (29793210579).

79101010221 is a wasteful number, since it uses less digits than its factorization.

79101010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187636.

The product of its (nonzero) digits is 252, while the sum is 24.

Subtracting from 79101010221 its sum of digits (24), we obtain a palindrome (79101010197).

The spelling of 79101010221 in words is "seventy-nine billion, one hundred one million, ten thousand, two hundred twenty-one".