11965321 has 2 divisors, whose sum is σ = 11965322. Its totient is φ = 11965320.

The previous prime is 11965279. The next prime is 11965337. The reversal of 11965321 is 12356911.

11965321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10169721 + 1795600 = 3189^2 + 1340^2 .

It is a cyclic number.

It is not a de Polignac number, because 11965321 - 2⁹ = 11964809 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11965321.

It is not a weakly prime, because it can be changed into another prime (11965621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5982660 + 5982661.

It is an arithmetic number, because the mean of its divisors is an integer number (5982661).

Almost surely, 2^11965321 is an apocalyptic number.

It is an amenable number.

11965321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11965321 is an equidigital number, since it uses as much as digits as its factorization.

11965321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1620, while the sum is 28.

The square root of 11965321 is about 3459.0925110497. The cubic root of 11965321 is about 228.7220938018.

The spelling of 11965321 in words is "eleven million, nine hundred sixty-five thousand, three hundred twenty-one".