21313002123200 has 42 divisors (see below), whose sum is σ = 52443305853336. Its totient is φ = 8525200848640.

The previous prime is 21313002123173. The next prime is 21313002123223. The reversal of 21313002123200 is 232120031312.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6660311564 + ... + 6660314763.

Almost surely, 2^{21313002123200} is an apocalyptic number.

21313002123200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21313002123200 is an abundant number, since it is smaller than the sum of its proper divisors (31130303730136).

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

21313002123200 is a wasteful number, since it uses less digits than its factorization.

21313002123200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13320626349 (or 13320626334 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21313002123200 its reverse (232120031312), we get a palindrome (21545122154512).

The spelling of 21313002123200 in words is "twenty-one trillion, three hundred thirteen billion, two million, one hundred twenty-three thousand, two hundred".