13221034 has 4 divisors (see below), whose sum is σ = 19831554. Its totient is φ = 6610516.

The previous prime is 13221031. The next prime is 13221037. The reversal of 13221034 is 43012231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43012231 = 23 ⋅1870097.

It is an interprime number because it is at equal distance from previous prime (13221031) and next prime (13221037).

It can be written as a sum of positive squares in only one way, i.e., 12215025 + 1006009 = 3495^2 + 1003^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13220999 and 13221017.

It is not an unprimeable number, because it can be changed into a prime (13221031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3305257 + ... + 3305260.

Almost surely, 2^13221034 is an apocalyptic number.

13221034 is a deficient number, since it is larger than the sum of its proper divisors (6610520).

13221034 is an equidigital number, since it uses as much as digits as its factorization.

13221034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6610519.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 13221034 is about 3636.0739816456. The cubic root of 13221034 is about 236.4586145731.

Adding to 13221034 its reverse (43012231), we get a palindrome (56233265).

The spelling of 13221034 in words is "thirteen million, two hundred twenty-one thousand, thirty-four".