22211121200 has 30 divisors (see below), whose sum is σ = 53362219644. Its totient is φ = 8884448320.

The previous prime is 22211121193. The next prime is 22211121241. The reversal of 22211121200 is 212111222.

It is a super-2 number, since 2×22211121200² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27763502 + ... + 27764301.

Almost surely, 2^22211121200 is an apocalyptic number.

22211121200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22211121200 is an abundant number, since it is smaller than the sum of its proper divisors (31151098444).

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

22211121200 is a wasteful number, since it uses less digits than its factorization.

22211121200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55527821 (or 55527810 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22211121200 its reverse (212111222), we get a palindrome (22423232422).

The spelling of 22211121200 in words is "twenty-two billion, two hundred eleven million, one hundred twenty-one thousand, two hundred".