22221112001000 has 128 divisors (see below), whose sum is σ = 56727575199360. Its totient is φ = 8079957568000.

The previous prime is 22221112000991. The next prime is 22221112001041. The reversal of 22221112001000 is 10021112222.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 249622499 + ... + 249711501.

It is an arithmetic number, because the mean of its divisors is an integer number (443184181245).

Almost surely, 2^{22221112001000} is an apocalyptic number.

22221112001000 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 22221112001000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28363787599680).

22221112001000 is an abundant number, since it is smaller than the sum of its proper divisors (34506463198360).

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

22221112001000 is a wasteful number, since it uses less digits than its factorization.

22221112001000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111732 (or 111718 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22221112001000 its reverse (10021112222), we get a palindrome (22231133113222).

The spelling of 22221112001000 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred twelve million, one thousand".