13343221 has 4 divisors (see below), whose sum is σ = 13468032. Its totient is φ = 13218412.

The previous prime is 13343203. The next prime is 13343233. The reversal of 13343221 is 12234331.

13343221 is digitally balanced in base 3, 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12234331 = 443 ⋅27617.

It is a cyclic number.

It is not a de Polignac number, because 13343221 - 2⁵ = 13343189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13343321) 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, 62245 + ... + 62458.

It is an arithmetic number, because the mean of its divisors is an integer number (3367008).

Almost surely, 2^13343221 is an apocalyptic number.

It is an amenable number.

13343221 is a deficient number, since it is larger than the sum of its proper divisors (124811).

13343221 is a wasteful number, since it uses less digits than its factorization.

13343221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124810.

The product of its digits is 432, while the sum is 19.

The square root of 13343221 is about 3652.8373903036. The cubic root of 13343221 is about 237.1848214416.

Adding to 13343221 its reverse (12234331), we get a palindrome (25577552).

The spelling of 13343221 in words is "thirteen million, three hundred forty-three thousand, two hundred twenty-one".