22013204123 has 4 divisors (see below), whose sum is σ = 22014161760. Its totient is φ = 22012246488.

The previous prime is 22013204117. The next prime is 22013204149. The reversal of 22013204123 is 32140231022.

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 22013204123 - 2²⁸ = 21744768667 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22013204095 and 22013204104.

It is not an unprimeable number, because it can be changed into a prime (22013204173) 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, 443468 + ... + 490601.

It is an arithmetic number, because the mean of its divisors is an integer number (5503540440).

Almost surely, 2^22013204123 is an apocalyptic number.

22013204123 is a deficient number, since it is larger than the sum of its proper divisors (957637).

22013204123 is an equidigital number, since it uses as much as digits as its factorization.

22013204123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957636.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 22013204123 its reverse (32140231022), we get a palindrome (54153435145).

The spelling of 22013204123 in words is "twenty-two billion, thirteen million, two hundred four thousand, one hundred twenty-three".