11226161 has 4 divisors (see below), whose sum is σ = 11613300. Its totient is φ = 10839024.

The previous prime is 11226157. The next prime is 11226179. The reversal of 11226161 is 16162211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9486400 + 1739761 = 3080^2 + 1319^2 .

It is a cyclic number.

It is not a de Polignac number, because 11226161 - 2² = 11226157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11226961) 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, 193526 + ... + 193583.

It is an arithmetic number, because the mean of its divisors is an integer number (2903325).

Almost surely, 2^11226161 is an apocalyptic number.

It is an amenable number.

11226161 is a deficient number, since it is larger than the sum of its proper divisors (387139).

11226161 is an equidigital number, since it uses as much as digits as its factorization.

11226161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387138.

The product of its digits is 144, while the sum is 20.

The square root of 11226161 is about 3350.5463733547. The cubic root of 11226161 is about 223.9118554661.

Adding to 11226161 its reverse (16162211), we get a palindrome (27388372).

The spelling of 11226161 in words is "eleven million, two hundred twenty-six thousand, one hundred sixty-one".