13221662 has 8 divisors (see below), whose sum is σ = 20055600. Its totient is φ = 6536464.

The previous prime is 13221647. The next prime is 13221667. The reversal of 13221662 is 26612231.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36962 + ... + 37317.

It is an arithmetic number, because the mean of its divisors is an integer number (2506950).

Almost surely, 2^13221662 is an apocalyptic number.

13221662 is a deficient number, since it is larger than the sum of its proper divisors (6833938).

13221662 is an equidigital number, since it uses as much as digits as its factorization.

13221662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74370.

The product of its digits is 864, while the sum is 23.

The square root of 13221662 is about 3636.1603374989. The cubic root of 13221662 is about 236.4623584472.

Adding to 13221662 its reverse (26612231), we get a palindrome (39833893).

The spelling of 13221662 in words is "thirteen million, two hundred twenty-one thousand, six hundred sixty-two".