21002331113200 has 120 divisors (see below), whose sum is σ = 50526706436496. Its totient is φ = 8389516032000.

The previous prime is 21002331113173. The next prime is 21002331113243. The reversal of 21002331113200 is 231113320012.

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, 1507373434 + ... + 1507387366.

Almost surely, 2^{21002331113200} is an apocalyptic number.

21002331113200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21002331113200 is an abundant number, since it is smaller than the sum of its proper divisors (29524375323296).

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

21002331113200 is a wasteful number, since it uses less digits than its factorization.

21002331113200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18803 (or 18792 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21002331113200 its reverse (231113320012), we get a palindrome (21233444433212).

The spelling of 21002331113200 in words is "twenty-one trillion, two billion, three hundred thirty-one million, one hundred thirteen thousand, two hundred".