13221241 has 16 divisors (see below), whose sum is σ = 14929920. Its totient is φ = 11604880.

The previous prime is 13221233. The next prime is 13221269. The reversal of 13221241 is 14212231.

It is a cyclic number.

It is not a de Polignac number, because 13221241 - 2³ = 13221233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13221641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55200 + ... + 55438.

It is an arithmetic number, because the mean of its divisors is an integer number (933120).

Almost surely, 2^13221241 is an apocalyptic number.

13221241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13221241 is a deficient number, since it is larger than the sum of its proper divisors (1708679).

13221241 is a wasteful number, since it uses less digits than its factorization.

13221241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404.

The product of its digits is 96, while the sum is 16.

The square root of 13221241 is about 3636.1024463015. The cubic root of 13221241 is about 236.4598486339.

Adding to 13221241 its reverse (14212231), we get a palindrome (27433472).

The spelling of 13221241 in words is "thirteen million, two hundred twenty-one thousand, two hundred forty-one".