Adding to 13104331315321 its reverse (12351313340131), we get a palindrome (25455644655452).
It is a strong prime.
It is a cyclic number.
Almost surely, 213104331315321 is an apocalyptic number.
It is an amenable number.
13104331315321 is an equidigital number, since it uses as much as digits as its factorization.
13104331315321 is an odious number, because the sum of its binary digits is odd.
The spelling of 13104331315321 in words is "thirteen trillion, one hundred four billion, three hundred thirty-one million, three hundred fifteen thousand, three hundred twenty-one".