13336221 has 8 divisors (see below), whose sum is σ = 17858880. Its totient is φ = 8852192.

The previous prime is 13336207. The next prime is 13336241. The reversal of 13336221 is 12263331.

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 13336221 - 2⁷ = 13336093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13336241) 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, 8841 + ... + 10238.

It is an arithmetic number, because the mean of its divisors is an integer number (2232360).

Almost surely, 2^13336221 is an apocalyptic number.

It is an amenable number.

13336221 is a deficient number, since it is larger than the sum of its proper divisors (4522659).

13336221 is a wasteful number, since it uses less digits than its factorization.

13336221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19315.

The product of its digits is 648, while the sum is 21.

The square root of 13336221 is about 3651.8791053374. The cubic root of 13336221 is about 237.1433376007.

Adding to 13336221 its reverse (12263331), we get a palindrome (25599552).

The spelling of 13336221 in words is "thirteen million, three hundred thirty-six thousand, two hundred twenty-one".