12031132021 has 16 divisors (see below), whose sum is σ = 12326699008. Its totient is φ = 11740302000.

The previous prime is 12031132007. The next prime is 12031132027. The reversal of 12031132021 is 12023113021.

It is a cyclic number.

It is not a de Polignac number, because 12031132021 - 2⁵ = 12031131989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12031131986 and 12031132004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031132027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1972186 + ... + 1978276.

It is an arithmetic number, because the mean of its divisors is an integer number (770418688).

Almost surely, 2^12031132021 is an apocalyptic number.

It is an amenable number.

12031132021 is a deficient number, since it is larger than the sum of its proper divisors (295566987).

12031132021 is a wasteful number, since it uses less digits than its factorization.

12031132021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6472.

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

Adding to 12031132021 its reverse (12023113021), we get a palindrome (24054245042).

The spelling of 12031132021 in words is "twelve billion, thirty-one million, one hundred thirty-two thousand, twenty-one".