11122271 has 4 divisors (see below), whose sum is σ = 11605872. Its totient is φ = 10638672.

The previous prime is 11122259. The next prime is 11122289. The reversal of 11122271 is 17222111.

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-11122271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122291) 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, 241766 + ... + 241811.

It is an arithmetic number, because the mean of its divisors is an integer number (2901468).

Almost surely, 2^11122271 is an apocalyptic number.

11122271 is a deficient number, since it is larger than the sum of its proper divisors (483601).

11122271 is an equidigital number, since it uses as much as digits as its factorization.

11122271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483600.

The product of its digits is 56, while the sum is 17.

The square root of 11122271 is about 3335.0068965446. The cubic root of 11122271 is about 223.2189996694.

Adding to 11122271 its reverse (17222111), we get a palindrome (28344382).

The spelling of 11122271 in words is "eleven million, one hundred twenty-two thousand, two hundred seventy-one".