12131202233 has 4 divisors (see below), whose sum is σ = 12179533968. Its totient is φ = 12082870500.

The previous prime is 12131202211. The next prime is 12131202263. The reversal of 12131202233 is 33220213121.

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, and also an emirpimes, since its reverse is a distinct semiprime: 33220213121 = 139 ⋅238994339.

It is a cyclic number.

It is not a de Polignac number, because 12131202233 - 2²⁴ = 12114425017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12131202203) 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, 24165491 + ... + 24165992.

It is an arithmetic number, because the mean of its divisors is an integer number (3044883492).

Almost surely, 2^12131202233 is an apocalyptic number.

It is an amenable number.

12131202233 is a deficient number, since it is larger than the sum of its proper divisors (48331735).

12131202233 is an equidigital number, since it uses as much as digits as its factorization.

12131202233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48331734.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12131202233 its reverse (33220213121), we get a palindrome (45351415354).

The spelling of 12131202233 in words is "twelve billion, one hundred thirty-one million, two hundred two thousand, two hundred thirty-three".