13221010 has 32 divisors (see below), whose sum is σ = 26116992. Its totient is φ = 4778880.

The previous prime is 13221007. The next prime is 13221011. The reversal of 13221010 is 1012231.

13221010 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (13221011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28702 + ... + 29158.

It is an arithmetic number, because the mean of its divisors is an integer number (816156).

Almost surely, 2^13221010 is an apocalyptic number.

13221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13221010 is a deficient number, since it is larger than the sum of its proper divisors (12895982).

13221010 is a wasteful number, since it uses less digits than its factorization.

13221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 13221010 is about 3636.0706813812. The cubic root of 13221010 is about 236.4584714928.

Adding to 13221010 its reverse (1012231), we get a palindrome (14233241).

It can be divided in two parts, 1322 and 1010, that added together give a palindrome (2332).

The spelling of 13221010 in words is "thirteen million, two hundred twenty-one thousand, ten".