13221205 has 8 divisors (see below), whose sum is σ = 16555392. Its totient is φ = 10117008.

The previous prime is 13221199. The next prime is 13221209. The reversal of 13221205 is 50212231.

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 13221205 - 2⁷ = 13221077 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 (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, 57369 + ... + 57598.

It is an arithmetic number, because the mean of its divisors is an integer number (2069424).

Almost surely, 2^13221205 is an apocalyptic number.

It is an amenable number.

13221205 is a deficient number, since it is larger than the sum of its proper divisors (3334187).

13221205 is a wasteful number, since it uses less digits than its factorization.

13221205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114995.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 13221205 is about 3636.0974959426. The cubic root of 13221205 is about 236.4596340155.

Adding to 13221205 its reverse (50212231), we get a palindrome (63433436).

The spelling of 13221205 in words is "thirteen million, two hundred twenty-one thousand, two hundred five".