22541132521 has 4 divisors (see below), whose sum is σ = 22543290000. Its totient is φ = 22538975044.

The previous prime is 22541132483. The next prime is 22541132567. The reversal of 22541132521 is 12523114522.

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 22541132521 - 2²⁵ = 22507578089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22541132521.

It is not an unprimeable number, because it can be changed into a prime (22541132821) 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, 1062991 + ... + 1083988.

It is an arithmetic number, because the mean of its divisors is an integer number (5635822500).

Almost surely, 2^22541132521 is an apocalyptic number.

It is an amenable number.

22541132521 is a deficient number, since it is larger than the sum of its proper divisors (2157479).

22541132521 is a wasteful number, since it uses less digits than its factorization.

22541132521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2157478.

The product of its digits is 4800, while the sum is 28.

The spelling of 22541132521 in words is "twenty-two billion, five hundred forty-one million, one hundred thirty-two thousand, five hundred twenty-one".