22221100112200 has 192 divisors, whose sum is σ = 57032263451520. Its totient is φ = 7984450560000.

The previous prime is 22221100112059. The next prime is 22221100112213. The reversal of 22221100112200 is 221100112222.

It is a happy number.

It is a zygodrome in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 111667192 + ... + 111866008.

It is an arithmetic number, because the mean of its divisors is an integer number (297043038810).

Almost surely, 2^{22221100112200} is an apocalyptic number.

22221100112200 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 22221100112200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28516131725760).

22221100112200 is an abundant number, since it is smaller than the sum of its proper divisors (34811163339320).

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

22221100112200 is a wasteful number, since it uses less digits than its factorization.

22221100112200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199448 (or 199439 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22221100112200 its reverse (221100112222), we get a palindrome (22442200224422).

The spelling of 22221100112200 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred million, one hundred twelve thousand, two hundred".