13221110 has 32 divisors (see below), whose sum is σ = 27613440. Its totient is φ = 4463712.

The previous prime is 13221101. The next prime is 13221137. The reversal of 13221110 is 1112231.

It is a junction number, because it is equal to n+sod(n) for n = 13221091 and 13221100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3281 + ... + 6099.

It is an arithmetic number, because the mean of its divisors is an integer number (862920).

Almost surely, 2^13221110 is an apocalyptic number.

13221110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13221110 is an abundant number, since it is smaller than the sum of its proper divisors (14392330).

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

13221110 is a wasteful number, since it uses less digits than its factorization.

13221110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2900.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 13221110 is about 3636.0844324630. The cubic root of 13221110 is about 236.4590676597.

Adding to 13221110 its reverse (1112231), we get a palindrome (14333341).

It can be divided in two parts, 13221 and 110, that added together give a palindrome (13331).

The spelling of 13221110 in words is "thirteen million, two hundred twenty-one thousand, one hundred ten".