22522340021 has 4 divisors (see below), whose sum is σ = 22569360000. Its totient is φ = 22475320044.

The previous prime is 22522340011. The next prime is 22522340033. The reversal of 22522340021 is 12004322522.

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-22522340021 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 (22522340011) 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, 23509271 + ... + 23510228.

It is an arithmetic number, because the mean of its divisors is an integer number (5642340000).

Almost surely, 2^22522340021 is an apocalyptic number.

It is an amenable number.

22522340021 is a deficient number, since it is larger than the sum of its proper divisors (47019979).

22522340021 is an equidigital number, since it uses as much as digits as its factorization.

22522340021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47019978.

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 22522340021 its reverse (12004322522), we get a palindrome (34526662543).

The spelling of 22522340021 in words is "twenty-two billion, five hundred twenty-two million, three hundred forty thousand, twenty-one".