12201020131 has 16 divisors (see below), whose sum is σ = 12766336128. Its totient is φ = 11650953600.

The previous prime is 12201020093. The next prime is 12201020149. The reversal of 12201020131 is 13102010221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12201020131 is a prime.

It is a super-2 number, since 2×12201020131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12201020171) 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, 437341 + ... + 464401.

It is an arithmetic number, because the mean of its divisors is an integer number (797896008).

Almost surely, 2^12201020131 is an apocalyptic number.

12201020131 is a deficient number, since it is larger than the sum of its proper divisors (565315997).

12201020131 is a wasteful number, since it uses less digits than its factorization.

12201020131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27342.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12201020131 its reverse (13102010221), we get a palindrome (25303030352).

The spelling of 12201020131 in words is "twelve billion, two hundred one million, twenty thousand, one hundred thirty-one".