13012212131 has 4 divisors (see below), whose sum is σ = 13777636392. Its totient is φ = 12246787872.

The previous prime is 13012212091. The next prime is 13012212139. The reversal of 13012212131 is 13121221031.

13012212131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13121221031 = 251 ⋅52275781.

It is a cyclic number.

It is not a de Polignac number, because 13012212131 - 2⁶ = 13012212067 is a prime.

It is a super-2 number, since 2×13012212131² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 765424243 = 13012212131 / (1 + 3 + 0 + 1 + 2 + 2 + 1 + 2 + 1 + 3 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13012212139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382712105 + ... + 382712138.

It is an arithmetic number, because the mean of its divisors is an integer number (3444409098).

Almost surely, 2^13012212131 is an apocalyptic number.

13012212131 is a deficient number, since it is larger than the sum of its proper divisors (765424261).

13012212131 is an equidigital number, since it uses as much as digits as its factorization.

13012212131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765424260.

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

Adding to 13012212131 its reverse (13121221031), we get a palindrome (26133433162).

The spelling of 13012212131 in words is "thirteen billion, twelve million, two hundred twelve thousand, one hundred thirty-one".