22523311121 has 4 divisors (see below), whose sum is σ = 22526410992. Its totient is φ = 22520211252.

The previous prime is 22523311099. The next prime is 22523311127. The reversal of 22523311121 is 12111332522.

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 22523311121 - 2¹⁰ = 22523310097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22523311127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1539011 + ... + 1553576.

It is an arithmetic number, because the mean of its divisors is an integer number (5631602748).

Almost surely, 2^22523311121 is an apocalyptic number.

It is an amenable number.

22523311121 is a deficient number, since it is larger than the sum of its proper divisors (3099871).

22523311121 is an equidigital number, since it uses as much as digits as its factorization.

22523311121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3099870.

The product of its digits is 720, while the sum is 23.

Adding to 22523311121 its reverse (12111332522), we get a palindrome (34634643643).

The spelling of 22523311121 in words is "twenty-two billion, five hundred twenty-three million, three hundred eleven thousand, one hundred twenty-one".