13212002131 has 4 divisors (see below), whose sum is σ = 13242515272. Its totient is φ = 13181488992.

The previous prime is 13212002129. The next prime is 13212002159. The reversal of 13212002131 is 13120021231.

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 13212002131 - 2¹ = 13212002129 is a prime.

It is a super-2 number, since 2×13212002131² (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 (13212003131) 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, 15255921 + ... + 15256786.

It is an arithmetic number, because the mean of its divisors is an integer number (3310628818).

Almost surely, 2^13212002131 is an apocalyptic number.

13212002131 is a deficient number, since it is larger than the sum of its proper divisors (30513141).

13212002131 is an equidigital number, since it uses as much as digits as its factorization.

13212002131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30513140.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 13212002131 its reverse (13120021231), we get a palindrome (26332023362).

The spelling of 13212002131 in words is "thirteen billion, two hundred twelve million, two thousand, one hundred thirty-one".