22115522000 has 320 divisors, whose sum is σ = 64053400320. Its totient is φ = 7278336000.

The previous prime is 22115521993. The next prime is 22115522041. The reversal of 22115522000 is 22551122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a zygodrome in base 10.

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 63 ways as a sum of consecutive naturals, for example, 15157271 + ... + 15158729.

It is an arithmetic number, because the mean of its divisors is an integer number (200166876).

Almost surely, 2^22115522000 is an apocalyptic number.

22115522000 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 22115522000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32026700160).

22115522000 is an abundant number, since it is smaller than the sum of its proper divisors (41937878320).

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

22115522000 is a wasteful number, since it uses less digits than its factorization.

22115522000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1559 (or 1543 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The spelling of 22115522000 in words is "twenty-two billion, one hundred fifteen million, five hundred twenty-two thousand".