21313321122000 has 320 divisors, whose sum is σ = 71038757657088. Its totient is φ = 5493312000000.

The previous prime is 21313321121987. The next prime is 21313321122019. The reversal of 21313321122000 is 22112331312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 33204100 + ... + 33839900.

Almost surely, 2^{21313321122000} is an apocalyptic number.

21313321122000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21313321122000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35519378828544).

21313321122000 is an abundant number, since it is smaller than the sum of its proper divisors (49725436535088).

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

21313321122000 is a wasteful number, since it uses less digits than its factorization.

21313321122000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636015 (or 635999 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21313321122000 its reverse (22112331312), we get a palindrome (21335433453312).

The spelling of 21313321122000 in words is "twenty-one trillion, three hundred thirteen billion, three hundred twenty-one million, one hundred twenty-two thousand".