12420324032320 has 28 divisors (see below), whose sum is σ = 29575896602724. Its totient is φ = 4968129612800.

The previous prime is 12420324032309. The next prime is 12420324032339. The reversal of 12420324032320 is 2323042302421.

It can be written as a sum of positive squares in 2 ways, for example, as 1551539289664 + 10868784742656 = 1245608^2 + 3296784^2 .

It is a super-3 number, since 3×12420324032320³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19406755981 + ... + 19406756620.

Almost surely, 2^{12420324032320} is an apocalyptic number.

12420324032320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12420324032320 is an abundant number, since it is smaller than the sum of its proper divisors (17155572570404).

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

12420324032320 is an equidigital number, since it uses as much as digits as its factorization.

12420324032320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38813512618 (or 38813512608 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 12420324032320 its reverse (2323042302421), we get a palindrome (14743366334741).

The spelling of 12420324032320 in words is "twelve trillion, four hundred twenty billion, three hundred twenty-four million, thirty-two thousand, three hundred twenty".