22221203200 has 432 divisors, whose sum is σ = 67338190080. Its totient is φ = 7086735360.

The previous prime is 22221203167. The next prime is 22221203227. The reversal of 22221203200 is 230212222.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 124140711 + ... + 124140889.

It is an arithmetic number, because the mean of its divisors is an integer number (155875440).

Almost surely, 2^22221203200 is an apocalyptic number.

22221203200 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 22221203200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33669095040).

22221203200 is an abundant number, since it is smaller than the sum of its proper divisors (45116986880).

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

22221203200 is a wasteful number, since it uses less digits than its factorization.

22221203200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 22221203200 its reverse (230212222), we get a palindrome (22451415422).

The spelling of 22221203200 in words is "twenty-two billion, two hundred twenty-one million, two hundred three thousand, two hundred".