22120211200 has 108 divisors (see below), whose sum is σ = 56517646528. Its totient is φ = 8562585600.

The previous prime is 22120211173. The next prime is 22120211207. The reversal of 22120211200 is 211202122.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22120211207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142654 + ... + 254146.

Almost surely, 2^22120211200 is an apocalyptic number.

22120211200 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 22120211200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28258823264).

22120211200 is an abundant number, since it is smaller than the sum of its proper divisors (34397435328).

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

22120211200 is a wasteful number, since it uses less digits than its factorization.

22120211200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111550 (or 111531 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22120211200 its reverse (211202122), we get a palindrome (22331413322).

The spelling of 22120211200 in words is "twenty-two billion, one hundred twenty million, two hundred eleven thousand, two hundred".