21232320331200 has 336 divisors, whose sum is σ = 76005084398976. Its totient is φ = 5146370355200.

The previous prime is 21232320331153. The next prime is 21232320331219. The reversal of 21232320331200 is 213302323212.

It is a super-2 number, since 2×21232320331200² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 351248179 + ... + 351308621.

Almost surely, 2^{21232320331200} is an apocalyptic number.

21232320331200 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 21232320331200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38002542199488).

21232320331200 is an abundant number, since it is smaller than the sum of its proper divisors (54772764067776).

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

21232320331200 is a wasteful number, since it uses less digits than its factorization.

21232320331200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67132 (or 67117 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 21232320331200 its reverse (213302323212), we get a palindrome (21445622654412).

The spelling of 21232320331200 in words is "twenty-one trillion, two hundred thirty-two billion, three hundred twenty million, three hundred thirty-one thousand, two hundred".