22120221200 has 240 divisors, whose sum is σ = 67103324160. Its totient is φ = 6806592000.

The previous prime is 22120221199. The next prime is 22120221203. The reversal of 22120221200 is 212202122.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (22120221203) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2428655 + ... + 2437745.

It is an arithmetic number, because the mean of its divisors is an integer number (279597184).

Almost surely, 2^22120221200 is an apocalyptic number.

22120221200 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 22120221200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33551662080).

22120221200 is an abundant number, since it is smaller than the sum of its proper divisors (44983102960).

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

22120221200 is a wasteful number, since it uses less digits than its factorization.

22120221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9206 (or 9195 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22120221200 its reverse (212202122), we get a palindrome (22332423322).

The spelling of 22120221200 in words is "twenty-two billion, one hundred twenty million, two hundred twenty-one thousand, two hundred".