23011111129 has 2 divisors, whose sum is σ = 23011111130. Its totient is φ = 23011111128.

The previous prime is 23011111061. The next prime is 23011111163. The reversal of 23011111129 is 92111111032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20483334400 + 2527776729 = 143120^2 + 50277^2 .

It is a cyclic number.

It is not a de Polignac number, because 23011111129 - 2¹¹ = 23011109081 is a prime.

It is a super-2 number, since 2×23011111129² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23011111169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11505555564 + 11505555565.

It is an arithmetic number, because the mean of its divisors is an integer number (11505555565).

Almost surely, 2^23011111129 is an apocalyptic number.

It is an amenable number.

23011111129 is a deficient number, since it is larger than the sum of its proper divisors (1).

23011111129 is an equidigital number, since it uses as much as digits as its factorization.

23011111129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 22.

The spelling of 23011111129 in words is "twenty-three billion, eleven million, one hundred eleven thousand, one hundred twenty-nine".