21122234304 has 56 divisors (see below), whose sum is σ = 56092270848. Its totient is φ = 7014746880.

The previous prime is 21122234291. The next prime is 21122234347. The reversal of 21122234304 is 40343222112.

It is a happy number.

It is a super-2 number, since 2×21122234304² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150942 + ... + 255005.

Almost surely, 2^21122234304 is an apocalyptic number.

21122234304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21122234304 is an abundant number, since it is smaller than the sum of its proper divisors (34970036544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21122234304 is a wasteful number, since it uses less digits than its factorization.

21122234304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406233 (or 406223 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21122234304 its reverse (40343222112), we get a palindrome (61465456416).

The spelling of 21122234304 in words is "twenty-one billion, one hundred twenty-two million, two hundred thirty-four thousand, three hundred four".