21522054300 has 72 divisors (see below), whose sum is σ = 65547888000. Its totient is φ = 5437149120.

The previous prime is 21522054277. The next prime is 21522054331. The reversal of 21522054300 is 345022512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1882200 + ... + 1893599.

Almost surely, 2^21522054300 is an apocalyptic number.

21522054300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21522054300 is an abundant number, since it is smaller than the sum of its proper divisors (44025833700).

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

21522054300 is a wasteful number, since it uses less digits than its factorization.

21522054300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3775835 (or 3775828 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 21522054300 its reverse (345022512), we get a palindrome (21867076812).

The spelling of 21522054300 in words is "twenty-one billion, five hundred twenty-two million, fifty-four thousand, three hundred".