12321424413421 has 24 divisors (see below), whose sum is σ = 13609904643680. Its totient is φ = 11115794698272.

The previous prime is 12321424413407. The next prime is 12321424413449. The reversal of 12321424413421 is 12431442412321.

It is not a de Polignac number, because 12321424413421 - 2²⁷ = 12321290195693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321424423421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2414235 + ... + 5520088.

Almost surely, 2^{12321424413421} is an apocalyptic number.

It is an amenable number.

12321424413421 is a deficient number, since it is larger than the sum of its proper divisors (1288480230259).

12321424413421 is an equidigital number, since it uses as much as digits as its factorization.

12321424413421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7934473 (or 7934426 counting only the distinct ones).

The product of its digits is 36864, while the sum is 34.

Adding to 12321424413421 its reverse (12431442412321), we get a palindrome (24752866825742).

The spelling of 12321424413421 in words is "twelve trillion, three hundred twenty-one billion, four hundred twenty-four million, four hundred thirteen thousand, four hundred twenty-one".