22520131233 has 4 divisors (see below), whose sum is σ = 30026841648. Its totient is φ = 15013420820.

The previous prime is 22520131229. The next prime is 22520131303. The reversal of 22520131233 is 33213102522.

It is a happy number.

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 22520131233 - 2² = 22520131229 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22520131223) 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, 3753355203 + ... + 3753355208.

It is an arithmetic number, because the mean of its divisors is an integer number (7506710412).

Almost surely, 2^22520131233 is an apocalyptic number.

It is an amenable number.

22520131233 is a deficient number, since it is larger than the sum of its proper divisors (7506710415).

22520131233 is an equidigital number, since it uses as much as digits as its factorization.

22520131233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7506710414.

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 22520131233 its reverse (33213102522), we get a palindrome (55733233755).

The spelling of 22520131233 in words is "twenty-two billion, five hundred twenty million, one hundred thirty-one thousand, two hundred thirty-three".