13433221 has 8 divisors (see below), whose sum is σ = 13768704. Its totient is φ = 13100880.

The previous prime is 13433207. The next prime is 13433291. The reversal of 13433221 is 12233431.

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 13433221 - 2⁷ = 13433093 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 (13433201) 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 7 ways as a sum of consecutive naturals, for example, 9460 + ... + 10786.

It is an arithmetic number, because the mean of its divisors is an integer number (1721088).

Almost surely, 2^13433221 is an apocalyptic number.

It is an amenable number.

13433221 is a deficient number, since it is larger than the sum of its proper divisors (335483).

13433221 is a wasteful number, since it uses less digits than its factorization.

13433221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571.

The product of its digits is 432, while the sum is 19.

The square root of 13433221 is about 3665.1358774266. The cubic root of 13433221 is about 237.7168973333.

Adding to 13433221 its reverse (12233431), we get a palindrome (25666652).

The spelling of 13433221 in words is "thirteen million, four hundred thirty-three thousand, two hundred twenty-one".