22123131253 has 4 divisors (see below), whose sum is σ = 22269642208. Its totient is φ = 21976620300.

The previous prime is 22123131227. The next prime is 22123131269. The reversal of 22123131253 is 35213132122.

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.

It is a cyclic number.

It is not a de Polignac number, because 22123131253 - 2⁵ = 22123131221 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 (22123131223) 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, 73255251 + ... + 73255552.

It is an arithmetic number, because the mean of its divisors is an integer number (5567410552).

Almost surely, 2^22123131253 is an apocalyptic number.

It is an amenable number.

22123131253 is a deficient number, since it is larger than the sum of its proper divisors (146510955).

22123131253 is a wasteful number, since it uses less digits than its factorization.

22123131253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146510954.

The product of its digits is 2160, while the sum is 25.

Adding to 22123131253 its reverse (35213132122), we get a palindrome (57336263375).

The spelling of 22123131253 in words is "twenty-two billion, one hundred twenty-three million, one hundred thirty-one thousand, two hundred fifty-three".