13221246 has 8 divisors (see below), whose sum is σ = 26442504. Its totient is φ = 4407080.

The previous prime is 13221233. The next prime is 13221269. The reversal of 13221246 is 64212231.

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

13221246 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1101765 + ... + 1101776.

It is an arithmetic number, because the mean of its divisors is an integer number (3305313).

Almost surely, 2^13221246 is an apocalyptic number.

13221246 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13221246 is a wasteful number, since it uses less digits than its factorization.

13221246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2203546.

The product of its digits is 576, while the sum is 21.

The square root of 13221246 is about 3636.1031338509. The cubic root of 13221246 is about 236.4598784420.

Adding to 13221246 its reverse (64212231), we get a palindrome (77433477).

The spelling of 13221246 in words is "thirteen million, two hundred twenty-one thousand, two hundred forty-six".