13230111123221 has 2 divisors, whose sum is σ = 13230111123222. Its totient is φ = 13230111123220.

The previous prime is 13230111123199. The next prime is 13230111123233. The reversal of 13230111123221 is 12232111103231.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12396131222596 + 833979900625 = 3520814^2 + 913225^2 .

It is an emirp because it is prime and its reverse (12232111103231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13230111123221 - 2⁶ = 13230111123157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13230111123421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6615055561610 + 6615055561611.

It is an arithmetic number, because the mean of its divisors is an integer number (6615055561611).

Almost surely, 2^{13230111123221} is an apocalyptic number.

It is an amenable number.

13230111123221 is a deficient number, since it is larger than the sum of its proper divisors (1).

13230111123221 is an equidigital number, since it uses as much as digits as its factorization.

13230111123221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 13230111123221 its reverse (12232111103231), we get a palindrome (25462222226452).

The spelling of 13230111123221 in words is "thirteen trillion, two hundred thirty billion, one hundred eleven million, one hundred twenty-three thousand, two hundred twenty-one".