22222313213 has 4 divisors (see below), whose sum is σ = 23188500768. Its totient is φ = 21256125660.

The previous prime is 22222313173. The next prime is 22222313219. The reversal of 22222313213 is 31231322222.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31231322222 = 2 ⋅15615661111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22222313213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 966187531 = 22222313213 / (2 + 2 + 2 + 2 + 2 + 3 + 1 + 3 + 2 + 1 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222313219) 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, 483093743 + ... + 483093788.

It is an arithmetic number, because the mean of its divisors is an integer number (5797125192).

Almost surely, 2^22222313213 is an apocalyptic number.

22222313213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

22222313213 is a deficient number, since it is larger than the sum of its proper divisors (966187555).

22222313213 is an equidigital number, since it uses as much as digits as its factorization.

22222313213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966187554.

The product of its digits is 1728, while the sum is 23.

Adding to 22222313213 its reverse (31231322222), we get a palindrome (53453635435).

Subtracting 22222313213 from its reverse (31231322222), we obtain a palindrome (9009009009).

The spelling of 22222313213 in words is "twenty-two billion, two hundred twenty-two million, three hundred thirteen thousand, two hundred thirteen".