23120121131 has 2 divisors, whose sum is σ = 23120121132. Its totient is φ = 23120121130.

The previous prime is 23120121109. The next prime is 23120121149. The reversal of 23120121131 is 13112102132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23120121131 - 2¹⁸ = 23119858987 is a prime.

It is a super-2 number, since 2×23120121131² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23120121151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11560060565 + 11560060566.

It is an arithmetic number, because the mean of its divisors is an integer number (11560060566).

Almost surely, 2^23120121131 is an apocalyptic number.

23120121131 is a deficient number, since it is larger than the sum of its proper divisors (1).

23120121131 is an equidigital number, since it uses as much as digits as its factorization.

23120121131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 23120121131 its reverse (13112102132), we get a palindrome (36232223263).

The spelling of 23120121131 in words is "twenty-three billion, one hundred twenty million, one hundred twenty-one thousand, one hundred thirty-one".