22222213200 has 360 divisors, whose sum is σ = 86186108736. Its totient is φ = 5255424000.

The previous prime is 22222213147. The next prime is 22222213219. The reversal of 22222213200 is 231222222.

It is a tau number, because it is divible by the number of its divisors (360).

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1616757 + ... + 1630443.

Almost surely, 2^22222213200 is an apocalyptic number.

22222213200 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 22222213200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43093054368).

22222213200 is an abundant number, since it is smaller than the sum of its proper divisors (63963895536).

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

22222213200 is a wasteful number, since it uses less digits than its factorization.

22222213200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13763 (or 13749 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 22222213200 its reverse (231222222), we get a palindrome (22453435422).

The spelling of 22222213200 in words is "twenty-two billion, two hundred twenty-two million, two hundred thirteen thousand, two hundred".