13330221 has 8 divisors (see below), whose sum is σ = 17796480. Its totient is φ = 8875392.

The previous prime is 13330199. The next prime is 13330231. The reversal of 13330221 is 12203331.

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

It is not a de Polignac number, because 13330221 - 2⁹ = 13329709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13330221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13330231) 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, 396 + ... + 5178.

It is an arithmetic number, because the mean of its divisors is an integer number (2224560).

Almost surely, 2^13330221 is an apocalyptic number.

It is an amenable number.

13330221 is a deficient number, since it is larger than the sum of its proper divisors (4466259).

13330221 is an equidigital number, since it uses as much as digits as its factorization.

13330221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5715.

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

The square root of 13330221 is about 3651.0575180350. The cubic root of 13330221 is about 237.1077684676.

Adding to 13330221 its reverse (12203331), we get a palindrome (25533552).

The spelling of 13330221 in words is "thirteen million, three hundred thirty thousand, two hundred twenty-one".