12243421243231 has 4 divisors (see below), whose sum is σ = 12887811835000. Its totient is φ = 11599030651464.

The previous prime is 12243421243189. The next prime is 12243421243237. The reversal of 12243421243231 is 13234212434221.

12243421243231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12243421243231 is a prime.

It is a super-2 number, since 2×12243421243231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12243421243237) 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, 322195295856 + ... + 322195295893.

It is an arithmetic number, because the mean of its divisors is an integer number (3221952958750).

Almost surely, 2^{12243421243231} is an apocalyptic number.

12243421243231 is a deficient number, since it is larger than the sum of its proper divisors (644390591769).

12243421243231 is an equidigital number, since it uses as much as digits as its factorization.

12243421243231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644390591768.

The product of its digits is 55296, while the sum is 34.

Adding to 12243421243231 its reverse (13234212434221), we get a palindrome (25477633677452).

The spelling of 12243421243231 in words is "twelve trillion, two hundred forty-three billion, four hundred twenty-one million, two hundred forty-three thousand, two hundred thirty-one".