22224231200 has 144 divisors (see below), whose sum is σ = 56268898560. Its totient is φ = 8561280000.

The previous prime is 22224231187. The next prime is 22224231209. The reversal of 22224231200 is 213242222.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (22224231209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11390225 + ... + 11392175.

It is an arithmetic number, because the mean of its divisors is an integer number (390756240).

Almost surely, 2^22224231200 is an apocalyptic number.

22224231200 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 22224231200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28134449280).

22224231200 is an abundant number, since it is smaller than the sum of its proper divisors (34044667360).

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

22224231200 is a wasteful number, since it uses less digits than its factorization.

22224231200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2491 (or 2478 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 22224231200 its reverse (213242222), we get a palindrome (22437473422).

The spelling of 22224231200 in words is "twenty-two billion, two hundred twenty-four million, two hundred thirty-one thousand, two hundred".