22534522521 has 16 divisors (see below), whose sum is σ = 34343547264. Its totient is φ = 12874909824.

The previous prime is 22534522447. The next prime is 22534522531. The reversal of 22534522521 is 12522543522.

It is not a de Polignac number, because 22534522521 - 2⁷ = 22534522393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22534522531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65751 + ... + 222243.

It is an arithmetic number, because the mean of its divisors is an integer number (2146471704).

Almost surely, 2^22534522521 is an apocalyptic number.

22534522521 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22534522521 is a deficient number, since it is larger than the sum of its proper divisors (11809024743).

22534522521 is a wasteful number, since it uses less digits than its factorization.

22534522521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163360.

The product of its digits is 48000, while the sum is 33.

The spelling of 22534522521 in words is "twenty-two billion, five hundred thirty-four million, five hundred twenty-two thousand, five hundred twenty-one".