21120100323200 has 96 divisors (see below), whose sum is σ = 52174639497000. Its totient is φ = 8447814789120.

The previous prime is 21120100323199. The next prime is 21120100323233. The reversal of 21120100323200 is 232300102112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 173183846 + ... + 173305754.

Almost surely, 2^{21120100323200} is an apocalyptic number.

21120100323200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21120100323200 is an abundant number, since it is smaller than the sum of its proper divisors (31054539173800).

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

21120100323200 is a wasteful number, since it uses less digits than its factorization.

21120100323200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176072 (or 176055 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21120100323200 its reverse (232300102112), we get a palindrome (21352400425312).

The spelling of 21120100323200 in words is "twenty-one trillion, one hundred twenty billion, one hundred million, three hundred twenty-three thousand, two hundred".