13221303 has 8 divisors (see below), whose sum is σ = 18236400. Its totient is φ = 8510208.

The previous prime is 13221293. The next prime is 13221317. The reversal of 13221303 is 30312231.

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

It is not a de Polignac number, because 13221303 - 2⁴ = 13221287 is a prime.

It is a super-3 number, since 3×13221303³ (a number of 22 digits) contains 333 as substring.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75898 + ... + 76071.

It is an arithmetic number, because the mean of its divisors is an integer number (2279550).

Almost surely, 2^13221303 is an apocalyptic number.

13221303 is a deficient number, since it is larger than the sum of its proper divisors (5015097).

13221303 is a wasteful number, since it uses less digits than its factorization.

13221303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152001.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 13221303 is about 3636.1109719039. The cubic root of 13221303 is about 236.4602182534.

Adding to 13221303 its reverse (30312231), we get a palindrome (43533534).

The spelling of 13221303 in words is "thirteen million, two hundred twenty-one thousand, three hundred three".