11171227 has 4 divisors (see below), whose sum is σ = 11828376. Its totient is φ = 10514080.

The previous prime is 11171207. The next prime is 11171239. The reversal of 11171227 is 72217111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11171227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11171198 and 11171207.

It is not an unprimeable number, because it can be changed into a prime (11171207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328549 + ... + 328582.

It is an arithmetic number, because the mean of its divisors is an integer number (2957094).

Almost surely, 2^11171227 is an apocalyptic number.

11171227 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

11171227 is a deficient number, since it is larger than the sum of its proper divisors (657149).

11171227 is an equidigital number, since it uses as much as digits as its factorization.

11171227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657148.

The product of its digits is 196, while the sum is 22.

The square root of 11171227 is about 3342.3385525706. The cubic root of 11171227 is about 223.5460286531.

Adding to 11171227 its reverse (72217111), we get a palindrome (83388338).

The spelling of 11171227 in words is "eleven million, one hundred seventy-one thousand, two hundred twenty-seven".