23177976121 has 2 divisors, whose sum is σ = 23177976122. Its totient is φ = 23177976120.

The previous prime is 23177976109. The next prime is 23177976187. The reversal of 23177976121 is 12167977132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20519130025 + 2658846096 = 143245^2 + 51564^2 .

It is a cyclic number.

It is not a de Polignac number, because 23177976121 - 2⁵ = 23177976089 is a prime.

It is not a weakly prime, because it can be changed into another prime (23177976221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11588988060 + 11588988061.

It is an arithmetic number, because the mean of its divisors is an integer number (11588988061).

Almost surely, 2^23177976121 is an apocalyptic number.

It is an amenable number.

23177976121 is a deficient number, since it is larger than the sum of its proper divisors (1).

23177976121 is an equidigital number, since it uses as much as digits as its factorization.

23177976121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 222264, while the sum is 46.

The spelling of 23177976121 in words is "twenty-three billion, one hundred seventy-seven million, nine hundred seventy-six thousand, one hundred twenty-one".