22131013321231 has 4 divisors (see below), whose sum is σ = 22131048853600. Its totient is φ = 22130977788864.

The previous prime is 22131013321199. The next prime is 22131013321379. The reversal of 22131013321231 is 13212331013122.

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 22131013321231 - 2⁵ = 22131013321199 is a prime.

It is a super-2 number, since 2×22131013321231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22131013321196 and 22131013321205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22131013325231) 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, 16814946 + ... + 18083263.

It is an arithmetic number, because the mean of its divisors is an integer number (5532762213400).

Almost surely, 2^{22131013321231} is an apocalyptic number.

22131013321231 is a deficient number, since it is larger than the sum of its proper divisors (35532369).

22131013321231 is an equidigital number, since it uses as much as digits as its factorization.

22131013321231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35532368.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 22131013321231 its reverse (13212331013122), we get a palindrome (35343344334353).

The spelling of 22131013321231 in words is "twenty-two trillion, one hundred thirty-one billion, thirteen million, three hundred twenty-one thousand, two hundred thirty-one".