22534355421 has 72 divisors (see below), whose sum is σ = 35091412512. Its totient is φ = 13920984000.

The previous prime is 22534355387. The next prime is 22534355429. The reversal of 22534355421 is 12455343522.

22534355421 is a `hidden beast` number, since 22 + 53 + 43 + 5 + 542 + 1 = 666.

It is not a de Polignac number, because 22534355421 - 2⁷ = 22534355293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22534355429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 21440346 + ... + 21441396.

Almost surely, 2^22534355421 is an apocalyptic number.

It is an amenable number.

22534355421 is a deficient number, since it is larger than the sum of its proper divisors (12557057091).

22534355421 is a wasteful number, since it uses less digits than its factorization.

22534355421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223 (or 1189 counting only the distinct ones).

The product of its digits is 144000, while the sum is 36.

Adding to 22534355421 its reverse (12455343522), we get a palindrome (34989698943).

The spelling of 22534355421 in words is "twenty-two billion, five hundred thirty-four million, three hundred fifty-five thousand, four hundred twenty-one".