23115622121 has 2 divisors, whose sum is σ = 23115622122. Its totient is φ = 23115622120.

The previous prime is 23115622111. The next prime is 23115622141. The reversal of 23115622121 is 12122651132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21826812121 + 1288810000 = 147739^2 + 35900^2 .

It is a cyclic number.

It is not a de Polignac number, because 23115622121 - 2²² = 23111427817 is a prime.

It is not a weakly prime, because it can be changed into another prime (23115622111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11557811060 + 11557811061.

It is an arithmetic number, because the mean of its divisors is an integer number (11557811061).

Almost surely, 2^23115622121 is an apocalyptic number.

It is an amenable number.

23115622121 is a deficient number, since it is larger than the sum of its proper divisors (1).

23115622121 is an equidigital number, since it uses as much as digits as its factorization.

23115622121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 26.

The spelling of 23115622121 in words is "twenty-three billion, one hundred fifteen million, six hundred twenty-two thousand, one hundred twenty-one".