979051221 has 12 divisors (see below), whose sum is σ = 1416399660. Its totient is φ = 651678720.

The previous prime is 979051211. The next prime is 979051231. The reversal of 979051221 is 122150979.

It is an interprime number because it is at equal distance from previous prime (979051211) and next prime (979051231).

It can be written as a sum of positive squares in 2 ways, for example, as 809687025 + 169364196 = 28455^2 + 13014^2 .

It is not a de Polignac number, because 979051221 - 2⁷ = 979051093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979051201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79086 + ... + 90623.

It is an arithmetic number, because the mean of its divisors is an integer number (118033305).

Almost surely, 2^979051221 is an apocalyptic number.

It is an amenable number.

979051221 is a deficient number, since it is larger than the sum of its proper divisors (437348439).

979051221 is a wasteful number, since it uses less digits than its factorization.

979051221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170356 (or 170353 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 979051221 is about 31289.7941987479. The cubic root of 979051221 is about 992.9677368634.

The spelling of 979051221 in words is "nine hundred seventy-nine million, fifty-one thousand, two hundred twenty-one".