22101121200 has 120 divisors (see below), whose sum is σ = 72710843728. Its totient is φ = 5734333440.

The previous prime is 22101121193. The next prime is 22101121213. The reversal of 22101121200 is 212110122.

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 (12).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 204487 + ... + 293286.

Almost surely, 2^22101121200 is an apocalyptic number.

22101121200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22101121200 is an abundant number, since it is smaller than the sum of its proper divisors (50609722528).

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

22101121200 is a wasteful number, since it uses less digits than its factorization.

22101121200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497831 (or 497820 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22101121200 its reverse (212110122), we get a palindrome (22313231322).

The spelling of 22101121200 in words is "twenty-two billion, one hundred one million, one hundred twenty-one thousand, two hundred".