12401020320 has 192 divisors, whose sum is σ = 44282609280. Its totient is φ = 2891870208.

The previous prime is 12401020309. The next prime is 12401020337. The reversal of 12401020320 is 2302010421.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12401020320.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66262 + ... + 170858.

It is an arithmetic number, because the mean of its divisors is an integer number (230638590).

Almost surely, 2^12401020320 is an apocalyptic number.

12401020320 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 12401020320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22141304640).

12401020320 is an abundant number, since it is smaller than the sum of its proper divisors (31881588960).

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

12401020320 is a wasteful number, since it uses less digits than its factorization.

12401020320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104647 (or 104639 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 12401020320 its reverse (2302010421), we get a palindrome (14703030741).

The spelling of 12401020320 in words is "twelve billion, four hundred one million, twenty thousand, three hundred twenty".