13221383 has 4 divisors (see below), whose sum is σ = 15110160. Its totient is φ = 11332608.

The previous prime is 13221379. The next prime is 13221401. The reversal of 13221383 is 38312231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38312231 = 367 ⋅104393.

It is not a de Polignac number, because 13221383 - 2² = 13221379 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 (13221353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 944378 + ... + 944391.

It is an arithmetic number, because the mean of its divisors is an integer number (3777540).

Almost surely, 2^13221383 is an apocalyptic number.

13221383 is a deficient number, since it is larger than the sum of its proper divisors (1888777).

13221383 is an equidigital number, since it uses as much as digits as its factorization.

13221383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888776.

The product of its digits is 864, while the sum is 23.

The square root of 13221383 is about 3636.1219726516. The cubic root of 13221383 is about 236.4606951802.

The spelling of 13221383 in words is "thirteen million, two hundred twenty-one thousand, three hundred eighty-three".