13095221 has 4 divisors (see below), whose sum is σ = 13103244. Its totient is φ = 13087200.

The previous prime is 13095209. The next prime is 13095223. The reversal of 13095221 is 12259031.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 7214596 + 5880625 = 2686^2 + 2425^2 .

It is a cyclic number.

It is not a de Polignac number, because 13095221 - 2⁶ = 13095157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13095223) 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 in 3 ways as a sum of consecutive naturals, for example, 590 + ... + 5151.

It is an arithmetic number, because the mean of its divisors is an integer number (3275811).

Almost surely, 2^13095221 is an apocalyptic number.

It is an amenable number.

13095221 is a deficient number, since it is larger than the sum of its proper divisors (8023).

13095221 is an equidigital number, since it uses as much as digits as its factorization.

13095221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8022.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 13095221 is about 3618.7319602314. The cubic root of 13095221 is about 235.7061661990.

The spelling of 13095221 in words is "thirteen million, ninety-five thousand, two hundred twenty-one".