13221106 has 8 divisors (see below), whose sum is σ = 20315484. Its totient is φ = 6449280.

The previous prime is 13221101. The next prime is 13221137. The reversal of 13221106 is 60112231.

It can be written as a sum of positive squares in 2 ways, for example, as 13068225 + 152881 = 3615^2 + 391^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 13221106.

It is not an unprimeable number, because it can be changed into a prime (13221101) 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, 80535 + ... + 80698.

Almost surely, 2^13221106 is an apocalyptic number.

13221106 is a deficient number, since it is larger than the sum of its proper divisors (7094378).

13221106 is a wasteful number, since it uses less digits than its factorization.

13221106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161276.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 13221106 is about 3636.0838824208. The cubic root of 13221106 is about 236.4590438131.

Adding to 13221106 its reverse (60112231), we get a palindrome (73333337).

The spelling of 13221106 in words is "thirteen million, two hundred twenty-one thousand, one hundred six".