21120002022200 has 96 divisors (see below), whose sum is σ = 53470785798000. Its totient is φ = 7727390899200.

The previous prime is 21120002022173. The next prime is 21120002022209. The reversal of 21120002022200 is 222020002112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120002022209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95715581 + ... + 95935980.

Almost surely, 2^{21120002022200} is an apocalyptic number.

21120002022200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21120002022200 is an abundant number, since it is smaller than the sum of its proper divisors (32350783775800).

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

21120002022200 is a wasteful number, since it uses less digits than its factorization.

21120002022200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191651625 (or 191651616 counting only the distinct ones).

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

Adding to 21120002022200 its reverse (222020002112), we get a palindrome (21342022024312).

The spelling of 21120002022200 in words is "twenty-one trillion, one hundred twenty billion, two million, twenty-two thousand, two hundred".