13201212131 has 4 divisors (see below), whose sum is σ = 13209574200. Its totient is φ = 13192850064.

The previous prime is 13201212127. The next prime is 13201212151. The reversal of 13201212131 is 13121210231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13201212131 - 2² = 13201212127 is a prime.

It is a super-2 number, since 2×13201212131² (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 (13201212151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4178666 + ... + 4181823.

It is an arithmetic number, because the mean of its divisors is an integer number (3302393550).

Almost surely, 2^13201212131 is an apocalyptic number.

13201212131 is a deficient number, since it is larger than the sum of its proper divisors (8362069).

13201212131 is an equidigital number, since it uses as much as digits as its factorization.

13201212131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8362068.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 13201212131 its reverse (13121210231), we get a palindrome (26322422362).

The spelling of 13201212131 in words is "thirteen billion, two hundred one million, two hundred twelve thousand, one hundred thirty-one".