131222331211 has 4 divisors (see below), whose sum is σ = 132091353424. Its totient is φ = 130353309000.

The previous prime is 131222331143. The next prime is 131222331221. The reversal of 131222331211 is 112133222131.

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 131222331211 - 2²⁵ = 131188776779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131222331221) 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, 434510880 + ... + 434511181.

It is an arithmetic number, because the mean of its divisors is an integer number (33022838356).

Almost surely, 2^131222331211 is an apocalyptic number.

131222331211 is a deficient number, since it is larger than the sum of its proper divisors (869022213).

131222331211 is an equidigital number, since it uses as much as digits as its factorization.

131222331211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869022212.

The product of its digits is 432, while the sum is 22.

Adding to 131222331211 its reverse (112133222131), we get a palindrome (243355553342).

The spelling of 131222331211 in words is "one hundred thirty-one billion, two hundred twenty-two million, three hundred thirty-one thousand, two hundred eleven".