13221223 has 8 divisors (see below), whose sum is σ = 14085792. Its totient is φ = 12366336.

The previous prime is 13221209. The next prime is 13221227. The reversal of 13221223 is 32212231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13221223 - 2⁵ = 13221191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13221197 and 13221206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 511 + ... + 5167.

It is an arithmetic number, because the mean of its divisors is an integer number (1760724).

Almost surely, 2^13221223 is an apocalyptic number.

13221223 is a deficient number, since it is larger than the sum of its proper divisors (864569).

13221223 is a wasteful number, since it uses less digits than its factorization.

13221223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4841.

The product of its digits is 144, while the sum is 16.

The square root of 13221223 is about 3636.0999711229. The cubic root of 13221223 is about 236.4597413248.

Adding to 13221223 its reverse (32212231), we get a palindrome (45433454).

The spelling of 13221223 in words is "thirteen million, two hundred twenty-one thousand, two hundred twenty-three".