12401043320 has 16 divisors (see below), whose sum is σ = 27902347560. Its totient is φ = 4960417312.

The previous prime is 12401043313. The next prime is 12401043409. The reversal of 12401043320 is 2334010421.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12401043292 and 12401043301.

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, 155013002 + ... + 155013081.

Almost surely, 2^12401043320 is an apocalyptic number.

12401043320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12401043320 is an abundant number, since it is smaller than the sum of its proper divisors (15501304240).

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

12401043320 is a wasteful number, since it uses less digits than its factorization.

12401043320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310026094 (or 310026090 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 12401043320 its reverse (2334010421), we get a palindrome (14735053741).

The spelling of 12401043320 in words is "twelve billion, four hundred one million, forty-three thousand, three hundred twenty".