22203121200 has 120 divisors (see below), whose sum is σ = 76595128848. Its totient is φ = 5465379840.

The previous prime is 22203121177. The next prime is 22203121243. The reversal of 22203121200 is 212130222.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22203121200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 696039 + ... + 727238.

Almost surely, 2^22203121200 is an apocalyptic number.

22203121200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22203121200 is an abundant number, since it is smaller than the sum of its proper divisors (54392007648).

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

22203121200 is a wasteful number, since it uses less digits than its factorization.

22203121200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423311 (or 1423300 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 22203121200 its reverse (212130222), we get a palindrome (22415251422).

The spelling of 22203121200 in words is "twenty-two billion, two hundred three million, one hundred twenty-one thousand, two hundred".