13212112131 has 6 divisors (see below), whose sum is σ = 19084161980. Its totient is φ = 8808074748.

The previous prime is 13212112129. The next prime is 13212112153. The reversal of 13212112131 is 13121121231.

13212112131 is a `hidden beast` number, since 1 + 321 + 211 + 2 + 131 = 666.

It is not a de Polignac number, because 13212112131 - 2¹ = 13212112129 is a prime.

It is a super-2 number, since 2×13212112131² (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 (13212112171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 734006221 + ... + 734006238.

Almost surely, 2^13212112131 is an apocalyptic number.

13212112131 is a deficient number, since it is larger than the sum of its proper divisors (5872049849).

13212112131 is a wasteful number, since it uses less digits than its factorization.

13212112131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468012465 (or 1468012462 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

Adding to 13212112131 its reverse (13121121231), we get a palindrome (26333233362).

The spelling of 13212112131 in words is "thirteen billion, two hundred twelve million, one hundred twelve thousand, one hundred thirty-one".