22105550000 has 120 divisors (see below), whose sum is σ = 56353424400. Its totient is φ = 8376480000.

The previous prime is 22105549979. The next prime is 22105550003. The reversal of 22105550000 is 5550122.

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

It is not an unprimeable number, because it can be changed into a prime (22105550003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 938366 + ... + 961634.

It is an arithmetic number, because the mean of its divisors is an integer number (469611870).

Almost surely, 2^22105550000 is an apocalyptic number.

22105550000 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 22105550000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28176712200).

22105550000 is an abundant number, since it is smaller than the sum of its proper divisors (34247874400).

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

22105550000 is an equidigital number, since it uses as much as digits as its factorization.

22105550000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23321 (or 23295 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The spelling of 22105550000 in words is "twenty-two billion, one hundred five million, five hundred fifty thousand".