22122100222200 has 1152 divisors, whose sum is σ = 87548839372800. Its totient is φ = 4954120704000.

The previous prime is 22122100222127. The next prime is 22122100222319. The reversal of 22122100222200 is 222200122122.

22122100222200 is a `hidden beast` number, since 2 + 21 + 221 + 0 + 0 + 222 + 200 = 666.

It is a super-2 number, since 2×22122100222200² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 1203652611 + ... + 1203670989.

It is an arithmetic number, because the mean of its divisors is an integer number (75997256400).

Almost surely, 2^{22122100222200} is an apocalyptic number.

22122100222200 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 22122100222200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43774419686400).

22122100222200 is an abundant number, since it is smaller than the sum of its proper divisors (65426739150600).

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

22122100222200 is a wasteful number, since it uses less digits than its factorization.

22122100222200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18533 (or 18521 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22122100222200 its reverse (222200122122), we get a palindrome (22344300344322).

The spelling of 22122100222200 in words is "twenty-two trillion, one hundred twenty-two billion, one hundred million, two hundred twenty-two thousand, two hundred".