12031211129 has 24 divisors (see below), whose sum is σ = 14110536960. Its totient is φ = 10227999264.

The previous prime is 12031211111. The next prime is 12031211149. The reversal of 12031211129 is 92111213021.

It is not a de Polignac number, because 12031211129 - 2¹² = 12031207033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12031211149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4059002 + ... + 4061964.

It is an arithmetic number, because the mean of its divisors is an integer number (587939040).

Almost surely, 2^12031211129 is an apocalyptic number.

It is an amenable number.

12031211129 is a deficient number, since it is larger than the sum of its proper divisors (2079325831).

12031211129 is a wasteful number, since it uses less digits than its factorization.

12031211129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3629 (or 3622 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 12031211129 in words is "twelve billion, thirty-one million, two hundred eleven thousand, one hundred twenty-nine".