12021202131 has 16 divisors (see below), whose sum is σ = 16877692800. Its totient is φ = 7589714688.

The previous prime is 12021202111. The next prime is 12021202147. The reversal of 12021202131 is 13120212021.

It is not a de Polignac number, because 12021202131 - 2⁵ = 12021202099 is a prime.

It is a super-2 number, since 2×12021202131² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12021202131.

It is not an unprimeable number, because it can be changed into a prime (12021202111) 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, 137155 + ... + 207011.

It is an arithmetic number, because the mean of its divisors is an integer number (1054855800).

Almost surely, 2^12021202131 is an apocalyptic number.

12021202131 is a deficient number, since it is larger than the sum of its proper divisors (4856490669).

12021202131 is a wasteful number, since it uses less digits than its factorization.

12021202131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72898.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12021202131 its reverse (13120212021), we get a palindrome (25141414152).

The spelling of 12021202131 in words is "twelve billion, twenty-one million, two hundred two thousand, one hundred thirty-one".