22031012131013 has 4 divisors (see below), whose sum is σ = 22568353890348. Its totient is φ = 21493670371680.

The previous prime is 22031012131001. The next prime is 22031012131057. The reversal of 22031012131013 is 31013121013022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 368671195489 + 21662340935524 = 607183^2 + 4654282^2 .

It is a cyclic number.

It is not a de Polignac number, because 22031012131013 - 2¹² = 22031012126917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22031012130013) 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, 268670879606 + ... + 268670879687.

It is an arithmetic number, because the mean of its divisors is an integer number (5642088472587).

Almost surely, 2^{22031012131013} is an apocalyptic number.

It is an amenable number.

22031012131013 is a deficient number, since it is larger than the sum of its proper divisors (537341759335).

22031012131013 is an equidigital number, since it uses as much as digits as its factorization.

22031012131013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537341759334.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 22031012131013 its reverse (31013121013022), we get a palindrome (53044133144035).

The spelling of 22031012131013 in words is "twenty-two trillion, thirty-one billion, twelve million, one hundred thirty-one thousand, thirteen".