12321132220320 has 384 divisors, whose sum is σ = 48458573678592. Its totient is φ = 2556524851200.

The previous prime is 12321132220303. The next prime is 12321132220373. The reversal of 12321132220320 is 2302223112321.

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

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 63 ways as a sum of consecutive naturals, for example, 25298142 + ... + 25780578.

It is an arithmetic number, because the mean of its divisors is an integer number (126194202288).

Almost surely, 2^{12321132220320} is an apocalyptic number.

12321132220320 is a gapful number since it is divisible by the number (10) 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 12321132220320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24229286839296).

12321132220320 is an abundant number, since it is smaller than the sum of its proper divisors (36137441458272).

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

12321132220320 is a wasteful number, since it uses less digits than its factorization.

12321132220320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483164 (or 483156 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 12321132220320 its reverse (2302223112321), we get a palindrome (14623355332641).

The spelling of 12321132220320 in words is "twelve trillion, three hundred twenty-one billion, one hundred thirty-two million, two hundred twenty thousand, three hundred twenty".