21522606200 has 48 divisors (see below), whose sum is σ = 50291610000. Its totient is φ = 8565765120.

The previous prime is 21522606197. The next prime is 21522606223. The reversal of 21522606200 is 260622512.

It is a self number, because there is not a number n which added to its sum of digits gives 21522606200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 230585 + ... + 310184.

It is an arithmetic number, because the mean of its divisors is an integer number (1047741875).

Almost surely, 2^21522606200 is an apocalyptic number.

21522606200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21522606200 is an abundant number, since it is smaller than the sum of its proper divisors (28769003800).

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

21522606200 is a wasteful number, since it uses less digits than its factorization.

21522606200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540984 (or 540975 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The spelling of 21522606200 in words is "twenty-one billion, five hundred twenty-two million, six hundred six thousand, two hundred".