21120222102200 has 96 divisors (see below), whose sum is σ = 52883029592400. Its totient is φ = 7798052597760.

The previous prime is 21120222102191. The next prime is 21120222102251. The reversal of 21120222102200 is 220122202112.

It is a happy number.

It is a congruent number.

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, 166422371 + ... + 166549229.

Almost surely, 2^{21120222102200} is an apocalyptic number.

21120222102200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21120222102200 is an abundant number, since it is smaller than the sum of its proper divisors (31762807490200).

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

21120222102200 is a wasteful number, since it uses less digits than its factorization.

21120222102200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190921 (or 190912 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21120222102200 its reverse (220122202112), we get a palindrome (21340344304312).

The spelling of 21120222102200 in words is "twenty-one trillion, one hundred twenty billion, two hundred twenty-two million, one hundred two thousand, two hundred".