23013122081 has 2 divisors, whose sum is σ = 23013122082. Its totient is φ = 23013122080.

The previous prime is 23013122021. The next prime is 23013122089. The reversal of 23013122081 is 18022131032.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22226039056 + 787083025 = 149084^2 + 28055^2 .

It is a cyclic number.

It is not a de Polignac number, because 23013122081 - 2⁶ = 23013122017 is a prime.

It is a super-2 number, since 2×23013122081² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (23013122089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11506561040 + 11506561041.

It is an arithmetic number, because the mean of its divisors is an integer number (11506561041).

Almost surely, 2^23013122081 is an apocalyptic number.

It is an amenable number.

23013122081 is a deficient number, since it is larger than the sum of its proper divisors (1).

23013122081 is an equidigital number, since it uses as much as digits as its factorization.

23013122081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

The spelling of 23013122081 in words is "twenty-three billion, thirteen million, one hundred twenty-two thousand, eighty-one".