13221203 has 8 divisors (see below), whose sum is σ = 13529280. Its totient is φ = 12916800.

The previous prime is 13221199. The next prime is 13221209. The reversal of 13221203 is 30212231.

It is a happy number.

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 13221203 - 2² = 13221199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13221209) 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, 7151 + ... + 8807.

It is an arithmetic number, because the mean of its divisors is an integer number (1691160).

Almost surely, 2^13221203 is an apocalyptic number.

13221203 is a deficient number, since it is larger than the sum of its proper divisors (308077).

13221203 is a wasteful number, since it uses less digits than its factorization.

13221203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1837.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 13221203 is about 3636.0972209225. The cubic root of 13221203 is about 236.4596220923.

Adding to 13221203 its reverse (30212231), we get a palindrome (43433434).

The spelling of 13221203 in words is "thirteen million, two hundred twenty-one thousand, two hundred three".