22355422521 has 8 divisors (see below), whose sum is σ = 30500421600. Its totient is φ = 14557019232.

The previous prime is 22355422513. The next prime is 22355422543. The reversal of 22355422521 is 12522455322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22355422521 - 2³ = 22355422513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22355522521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86648796 + ... + 86649053.

It is an arithmetic number, because the mean of its divisors is an integer number (3812552700).

Almost surely, 2^22355422521 is an apocalyptic number.

It is an amenable number.

22355422521 is a deficient number, since it is larger than the sum of its proper divisors (8144999079).

22355422521 is a wasteful number, since it uses less digits than its factorization.

22355422521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173297895.

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

Adding to 22355422521 its reverse (12522455322), we get a palindrome (34877877843).

The spelling of 22355422521 in words is "twenty-two billion, three hundred fifty-five million, four hundred twenty-two thousand, five hundred twenty-one".