12421712415 has 64 divisors (see below), whose sum is σ = 23238144000. Its totient is φ = 5663653632.

The previous prime is 12421712399. The next prime is 12421712437. The reversal of 12421712415 is 51421712421.

It is not a de Polignac number, because 12421712415 - 2⁴ = 12421712399 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2101354 + ... + 2107256.

It is an arithmetic number, because the mean of its divisors is an integer number (363096000).

Almost surely, 2^12421712415 is an apocalyptic number.

12421712415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12421712415 is a deficient number, since it is larger than the sum of its proper divisors (10816431585).

12421712415 is an equidigital number, since it uses as much as digits as its factorization.

12421712415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6341 (or 6327 counting only the distinct ones).

The product of its digits is 4480, while the sum is 30.

The spelling of 12421712415 in words is "twelve billion, four hundred twenty-one million, seven hundred twelve thousand, four hundred fifteen".