13221033 has 12 divisors (see below), whose sum is σ = 20506320. Its totient is φ = 7554792.

The previous prime is 13221031. The next prime is 13221037. The reversal of 13221033 is 33012231.

It is not a de Polignac number, because 13221033 - 2¹ = 13221031 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13221031) 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 11 ways as a sum of consecutive naturals, for example, 44823 + ... + 45116.

It is an arithmetic number, because the mean of its divisors is an integer number (1708860).

Almost surely, 2^13221033 is an apocalyptic number.

It is an amenable number.

13221033 is a deficient number, since it is larger than the sum of its proper divisors (7285287).

13221033 is an equidigital number, since it uses as much as digits as its factorization.

13221033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89956 (or 89949 counting only the distinct ones).

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

The square root of 13221033 is about 3636.0738441346. The cubic root of 13221033 is about 236.4586086114.

Adding to 13221033 its reverse (33012231), we get a palindrome (46233264).

The spelling of 13221033 in words is "thirteen million, two hundred twenty-one thousand, thirty-three".