22111021221100 has 216 divisors, whose sum is σ = 56057616527360. Its totient is φ = 7415146166400.

The previous prime is 22111021221041. The next prime is 22111021221131. The reversal of 22111021221100 is 112212011122.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 448120231 + ... + 448169569.

Almost surely, 2^{22111021221100} is an apocalyptic number.

22111021221100 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 22111021221100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28028808263680).

22111021221100 is an abundant number, since it is smaller than the sum of its proper divisors (33946595306260).

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

22111021221100 is a wasteful number, since it uses less digits than its factorization.

22111021221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49629 (or 49551 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 22111021221100 its reverse (112212011122), we get a palindrome (22223233232222).

The spelling of 22111021221100 in words is "twenty-two trillion, one hundred eleven billion, twenty-one million, two hundred twenty-one thousand, one hundred".