22123343213 has 4 divisors (see below), whose sum is σ = 22146558588. Its totient is φ = 22100127840.

The previous prime is 22123343189. The next prime is 22123343269. The reversal of 22123343213 is 31234332122.

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 6044596009 + 16078747204 = 77747^2 + 126802^2 .

It is a cyclic number.

It is not a de Polignac number, because 22123343213 - 2²⁴ = 22106565997 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 (22123343713) 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, 11606258 + ... + 11608163.

It is an arithmetic number, because the mean of its divisors is an integer number (5536639647).

Almost surely, 2^22123343213 is an apocalyptic number.

It is an amenable number.

22123343213 is a deficient number, since it is larger than the sum of its proper divisors (23215375).

22123343213 is an equidigital number, since it uses as much as digits as its factorization.

22123343213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23215374.

The product of its digits is 5184, while the sum is 26.

Adding to 22123343213 its reverse (31234332122), we get a palindrome (53357675335).

The spelling of 22123343213 in words is "twenty-two billion, one hundred twenty-three million, three hundred forty-three thousand, two hundred thirteen".