13124212413421 has 4 divisors (see below), whose sum is σ = 13814960435200. Its totient is φ = 12433464391644.

The previous prime is 13124212413413. The next prime is 13124212413449. The reversal of 13124212413421 is 12431421242131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13124212413421 - 2³ = 13124212413413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13124212413451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 345374010861 + ... + 345374010898.

It is an arithmetic number, because the mean of its divisors is an integer number (3453740108800).

Almost surely, 2^{13124212413421} is an apocalyptic number.

It is an amenable number.

13124212413421 is a deficient number, since it is larger than the sum of its proper divisors (690748021779).

13124212413421 is an equidigital number, since it uses as much as digits as its factorization.

13124212413421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690748021778.

The product of its digits is 9216, while the sum is 31.

Adding to 13124212413421 its reverse (12431421242131), we get a palindrome (25555633655552).

The spelling of 13124212413421 in words is "thirteen trillion, one hundred twenty-four billion, two hundred twelve million, four hundred thirteen thousand, four hundred twenty-one".