22521600000 has 864 divisors, whose sum is σ = 89828313120. Its totient is φ = 5406720000.

The previous prime is 22521599999. The next prime is 22521600043. The reversal of 22521600000 is 612522.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 979199989 + ... + 979200011.

It is an arithmetic number, because the mean of its divisors is an integer number (103967955).

Almost surely, 2^22521600000 is an apocalyptic number.

22521600000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22521600000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44914156560).

22521600000 is an abundant number, since it is smaller than the sum of its proper divisors (67306713120).

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

22521600000 is an equidigital number, since it uses as much as digits as its factorization.

22521600000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

It can be divided in two parts, 22521 and 600000, that added together give a square (622521 = 789²).

The spelling of 22521600000 in words is "twenty-two billion, five hundred twenty-one million, six hundred thousand".