22521123201 has 64 divisors (see below), whose sum is σ = 33052098816. Its totient is φ = 13586227200.

The previous prime is 22521123113. The next prime is 22521123241. The reversal of 22521123201 is 10232112522.

It is a de Polignac number, because none of the positive numbers 2^k-22521123201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22521123241) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29750115 + ... + 29750871.

It is an arithmetic number, because the mean of its divisors is an integer number (516439044).

Almost surely, 2^22521123201 is an apocalyptic number.

It is an amenable number.

22521123201 is a deficient number, since it is larger than the sum of its proper divisors (10530975615).

22521123201 is a wasteful number, since it uses less digits than its factorization.

22521123201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 22521123201 its reverse (10232112522), we get a palindrome (32753235723).

The spelling of 22521123201 in words is "twenty-two billion, five hundred twenty-one million, one hundred twenty-three thousand, two hundred one".