22111221011000 has 128 divisors (see below), whose sum is σ = 56481764564160. Its totient is φ = 8035052608000.

The previous prime is 22111221010961. The next prime is 22111221011017. The reversal of 22111221011000 is 11012211122.

It is a congruent number.

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, 15749822 + ... + 17096178.

Almost surely, 2^{22111221011000} is an apocalyptic number.

22111221011000 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 22111221011000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28240882282080).

22111221011000 is an abundant number, since it is smaller than the sum of its proper divisors (34370543553160).

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

22111221011000 is a wasteful number, since it uses less digits than its factorization.

22111221011000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347882 (or 1347868 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 22111221011000 its reverse (11012211122), we get a palindrome (22122233222122).

The spelling of 22111221011000 in words is "twenty-two trillion, one hundred eleven billion, two hundred twenty-one million, eleven thousand".