23122156529 has 2 divisors, whose sum is σ = 23122156530. Its totient is φ = 23122156528.

The previous prime is 23122156511. The next prime is 23122156531. The reversal of 23122156529 is 92565122132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13197414400 + 9924742129 = 114880^2 + 99623^2 .

It is a cyclic number.

It is not a de Polignac number, because 23122156529 - 2⁸ = 23122156273 is a prime.

Together with 23122156531, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 23122156492 and 23122156501.

It is not a weakly prime, because it can be changed into another prime (23122146529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11561078264 + 11561078265.

It is an arithmetic number, because the mean of its divisors is an integer number (11561078265).

Almost surely, 2^23122156529 is an apocalyptic number.

It is an amenable number.

23122156529 is a deficient number, since it is larger than the sum of its proper divisors (1).

23122156529 is an equidigital number, since it uses as much as digits as its factorization.

23122156529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 38.

The spelling of 23122156529 in words is "twenty-three billion, one hundred twenty-two million, one hundred fifty-six thousand, five hundred twenty-nine".