21232331011320 has 256 divisors, whose sum is σ = 74841909811200. Its totient is φ = 4750714429440.

The previous prime is 21232331011289. The next prime is 21232331011349. The reversal of 21232331011320 is 2311013323212.

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 63 ways as a sum of consecutive naturals, for example, 150130801 + ... + 150272159.

It is an arithmetic number, because the mean of its divisors is an integer number (292351210200).

Almost surely, 2^{21232331011320} is an apocalyptic number.

21232331011320 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 21232331011320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37420954905600).

21232331011320 is an abundant number, since it is smaller than the sum of its proper divisors (53609578799880).

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

21232331011320 is a wasteful number, since it uses less digits than its factorization.

21232331011320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150150 (or 150146 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21232331011320 its reverse (2311013323212), we get a palindrome (23543344334532).

The spelling of 21232331011320 in words is "twenty-one trillion, two hundred thirty-two billion, three hundred thirty-one million, eleven thousand, three hundred twenty".