11129161 has 4 divisors (see below), whose sum is σ = 11136132. Its totient is φ = 11122192.

The previous prime is 11129159. The next prime is 11129191. The reversal of 11129161 is 16192111.

11129161 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 9265936 + 1863225 = 3044^2 + 1365^2 .

It is a cyclic number.

It is not a de Polignac number, because 11129161 - 2¹ = 11129159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11129141) 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 in 3 ways as a sum of consecutive naturals, for example, 231 + ... + 4723.

It is an arithmetic number, because the mean of its divisors is an integer number (2784033).

Almost surely, 2^11129161 is an apocalyptic number.

It is an amenable number.

11129161 is a deficient number, since it is larger than the sum of its proper divisors (6971).

11129161 is an equidigital number, since it uses as much as digits as its factorization.

11129161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6970.

The product of its digits is 108, while the sum is 22.

The square root of 11129161 is about 3336.0397179890. The cubic root of 11129161 is about 223.2650832266.

The spelling of 11129161 in words is "eleven million, one hundred twenty-nine thousand, one hundred sixty-one".