22311223013213 has 4 divisors (see below), whose sum is σ = 23080575530940. Its totient is φ = 21541870495488.

The previous prime is 22311223013119. The next prime is 22311223013231. The reversal of 22311223013213 is 31231032211322.

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 5104879322404 + 17206343690809 = 2259398^2 + 4148053^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22311223013213 is a prime.

It is a super-3 number, since 3×22311223013213³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22311223013243) 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, 384676258820 + ... + 384676258877.

It is an arithmetic number, because the mean of its divisors is an integer number (5770143882735).

Almost surely, 2^{22311223013213} is an apocalyptic number.

It is an amenable number.

22311223013213 is a deficient number, since it is larger than the sum of its proper divisors (769352517727).

22311223013213 is an equidigital number, since it uses as much as digits as its factorization.

22311223013213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769352517726.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 22311223013213 its reverse (31231032211322), we get a palindrome (53542255224535).

The spelling of 22311223013213 in words is "twenty-two trillion, three hundred eleven billion, two hundred twenty-three million, thirteen thousand, two hundred thirteen".