131222203211321 has 4 divisors (see below), whose sum is σ = 131222705410944. Its totient is φ = 131221701011700.

The previous prime is 131222203211317. The next prime is 131222203211339. The reversal of 131222203211321 is 123112302222131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131222203211321 - 2² = 131222203211317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131222203211311) 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, 250707665 + ... + 251230526.

It is an arithmetic number, because the mean of its divisors is an integer number (32805676352736).

Almost surely, 2^{131222203211321} is an apocalyptic number.

It is an amenable number.

131222203211321 is a deficient number, since it is larger than the sum of its proper divisors (502199623).

131222203211321 is an equidigital number, since it uses as much as digits as its factorization.

131222203211321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502199622.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 131222203211321 its reverse (123112302222131), we get a palindrome (254334505433452).

The spelling of 131222203211321 in words is "one hundred thirty-one trillion, two hundred twenty-two billion, two hundred three million, two hundred eleven thousand, three hundred twenty-one".