13211161 has 2 divisors, whose sum is σ = 13211162. Its totient is φ = 13211160.

The previous prime is 13211129. The next prime is 13211167. The reversal of 13211161 is 16111231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8737936 + 4473225 = 2956^2 + 2115^2 .

It is a cyclic number.

It is not a de Polignac number, because 13211161 - 2⁵ = 13211129 is a prime.

It is not a weakly prime, because it can be changed into another prime (13211167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6605580 + 6605581.

It is an arithmetic number, because the mean of its divisors is an integer number (6605581).

Almost surely, 2^13211161 is an apocalyptic number.

It is an amenable number.

13211161 is a deficient number, since it is larger than the sum of its proper divisors (1).

13211161 is an equidigital number, since it uses as much as digits as its factorization.

13211161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36, while the sum is 16.

The square root of 13211161 is about 3634.7160824472. The cubic root of 13211161 is about 236.3997402757.

Adding to 13211161 its reverse (16111231), we get a palindrome (29322392).

The spelling of 13211161 in words is "thirteen million, two hundred eleven thousand, one hundred sixty-one".