12003412520 has 32 divisors (see below), whose sum is σ = 29462922720. Its totient is φ = 4364877120.

The previous prime is 12003412483. The next prime is 12003412541. The reversal of 12003412520 is 2521430021.

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 = 12003412492 and 12003412501.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13639802 + ... + 13640681.

It is an arithmetic number, because the mean of its divisors is an integer number (920716335).

Almost surely, 2^12003412520 is an apocalyptic number.

12003412520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12003412520 is an abundant number, since it is smaller than the sum of its proper divisors (17459510200).

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

12003412520 is a wasteful number, since it uses less digits than its factorization.

12003412520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27280505 (or 27280501 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 12003412520 its reverse (2521430021), we get a palindrome (14524842541).

The spelling of 12003412520 in words is "twelve billion, three million, four hundred twelve thousand, five hundred twenty".