23002131121 has 4 divisors (see below), whose sum is σ = 23003029744. Its totient is φ = 23001232500.

The previous prime is 23002131109. The next prime is 23002131193. The reversal of 23002131121 is 12113120032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23002131121 - 2⁹ = 23002130609 is a prime.

It is a super-2 number, since 2×23002131121² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23002131095 and 23002131104.

It is not an unprimeable number, because it can be changed into a prime (23002131421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409755 + ... + 462496.

It is an arithmetic number, because the mean of its divisors is an integer number (5750757436).

Almost surely, 2^23002131121 is an apocalyptic number.

It is an amenable number.

23002131121 is a deficient number, since it is larger than the sum of its proper divisors (898623).

23002131121 is an equidigital number, since it uses as much as digits as its factorization.

23002131121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898622.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 23002131121 its reverse (12113120032), we get a palindrome (35115251153).

The spelling of 23002131121 in words is "twenty-three billion, two million, one hundred thirty-one thousand, one hundred twenty-one".