12131032021021 has 16 divisors (see below), whose sum is σ = 12967718924160. Its totient is φ = 11320138170880.

The previous prime is 12131032021007. The next prime is 12131032021027. The reversal of 12131032021021 is 12012023013121.

12131032021021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12131032021021 - 2²⁷ = 12130897803293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12131032021021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131032021027) 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, 25216110 + ... + 25692688.

It is an arithmetic number, because the mean of its divisors is an integer number (810482432760).

Almost surely, 2^{12131032021021} is an apocalyptic number.

It is an amenable number.

12131032021021 is a deficient number, since it is larger than the sum of its proper divisors (836686903139).

12131032021021 is a wasteful number, since it uses less digits than its factorization.

12131032021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503636.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 12131032021021 its reverse (12012023013121), we get a palindrome (24143055034142).

The spelling of 12131032021021 in words is "twelve trillion, one hundred thirty-one billion, thirty-two million, twenty-one thousand, twenty-one".