13321231213243 has 4 divisors (see below), whose sum is σ = 13330753181200. Its totient is φ = 13311709245288.

The previous prime is 13321231213229. The next prime is 13321231213271. The reversal of 13321231213243 is 34231213212331.

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-13321231213243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13321231214243) 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, 4760981880 + ... + 4760984677.

It is an arithmetic number, because the mean of its divisors is an integer number (3332688295300).

Almost surely, 2^{13321231213243} is an apocalyptic number.

13321231213243 is a deficient number, since it is larger than the sum of its proper divisors (9521967957).

13321231213243 is an equidigital number, since it uses as much as digits as its factorization.

13321231213243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9521967956.

The product of its digits is 15552, while the sum is 31.

Adding to 13321231213243 its reverse (34231213212331), we get a palindrome (47552444425574).

The spelling of 13321231213243 in words is "thirteen trillion, three hundred twenty-one billion, two hundred thirty-one million, two hundred thirteen thousand, two hundred forty-three".