12243421110421 has 8 divisors (see below), whose sum is σ = 13069330171200. Its totient is φ = 11435663897280.

The previous prime is 12243421110329. The next prime is 12243421110439. The reversal of 12243421110421 is 12401112434221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12243421110421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12243421110421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12243421119421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4537960516 + ... + 4537963213.

It is an arithmetic number, because the mean of its divisors is an integer number (1633666271400).

Almost surely, 2^{12243421110421} is an apocalyptic number.

It is an amenable number.

12243421110421 is a deficient number, since it is larger than the sum of its proper divisors (825909060779).

12243421110421 is an equidigital number, since it uses as much as digits as its factorization.

12243421110421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9075923819.

The product of its (nonzero) digits is 3072, while the sum is 28.

Adding to 12243421110421 its reverse (12401112434221), we get a palindrome (24644533544642).

The spelling of 12243421110421 in words is "twelve trillion, two hundred forty-three billion, four hundred twenty-one million, one hundred ten thousand, four hundred twenty-one".