22135503121 has 4 divisors (see below), whose sum is σ = 22510681200. Its totient is φ = 21760325044.

The previous prime is 22135503073. The next prime is 22135503193. The reversal of 22135503121 is 12130553122.

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 a de Polignac number, because none of the positive numbers 2^k-22135503121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22135503821) 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, 187588951 + ... + 187589068.

It is an arithmetic number, because the mean of its divisors is an integer number (5627670300).

Almost surely, 2^22135503121 is an apocalyptic number.

It is an amenable number.

22135503121 is a deficient number, since it is larger than the sum of its proper divisors (375178079).

22135503121 is an equidigital number, since it uses as much as digits as its factorization.

22135503121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375178078.

The product of its (nonzero) digits is 1800, while the sum is 25.

The spelling of 22135503121 in words is "twenty-two billion, one hundred thirty-five million, five hundred three thousand, one hundred twenty-one".