13230001331221 has 4 divisors (see below), whose sum is σ = 13656775567744. Its totient is φ = 12803227094700.

The previous prime is 13230001331213. The next prime is 13230001331233. The reversal of 13230001331221 is 12213310003231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13230001331221 - 2³ = 13230001331213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13230001331192 and 13230001331201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13230001331201) 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, 213387118215 + ... + 213387118276.

It is an arithmetic number, because the mean of its divisors is an integer number (3414193891936).

Almost surely, 2^{13230001331221} is an apocalyptic number.

It is an amenable number.

13230001331221 is a deficient number, since it is larger than the sum of its proper divisors (426774236523).

13230001331221 is an equidigital number, since it uses as much as digits as its factorization.

13230001331221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426774236522.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 13230001331221 its reverse (12213310003231), we get a palindrome (25443311334452).

The spelling of 13230001331221 in words is "thirteen trillion, two hundred thirty billion, one million, three hundred thirty-one thousand, two hundred twenty-one".