977322121 has 2 divisors, whose sum is σ = 977322122. Its totient is φ = 977322120.

The previous prime is 977322097. The next prime is 977322131. The reversal of 977322121 is 121223779.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 648262521 + 329059600 = 25461^2 + 18140^2 .

It is a cyclic number.

It is not a de Polignac number, because 977322121 - 2²⁷ = 843104393 is a prime.

It is not a weakly prime, because it can be changed into another prime (977322131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488661060 + 488661061.

It is an arithmetic number, because the mean of its divisors is an integer number (488661061).

Almost surely, 2^977322121 is an apocalyptic number.

It is an amenable number.

977322121 is a deficient number, since it is larger than the sum of its proper divisors (1).

977322121 is an equidigital number, since it uses as much as digits as its factorization.

977322121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10584, while the sum is 34.

The square root of 977322121 is about 31262.1515734282. The cubic root of 977322121 is about 992.3828330874.

The spelling of 977322121 in words is "nine hundred seventy-seven million, three hundred twenty-two thousand, one hundred twenty-one".