11142227 has 4 divisors (see below), whose sum is σ = 11728680. Its totient is φ = 10555776.

The previous prime is 11142223. The next prime is 11142247. The reversal of 11142227 is 72224111.

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

It is a cyclic number.

It is not a de Polignac number, because 11142227 - 2² = 11142223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11142199 and 11142208.

It is not an unprimeable number, because it can be changed into a prime (11142223) 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, 293198 + ... + 293235.

It is an arithmetic number, because the mean of its divisors is an integer number (2932170).

Almost surely, 2^11142227 is an apocalyptic number.

11142227 is a deficient number, since it is larger than the sum of its proper divisors (586453).

11142227 is an equidigital number, since it uses as much as digits as its factorization.

11142227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586452.

The product of its digits is 224, while the sum is 20.

The square root of 11142227 is about 3337.9974535640. The cubic root of 11142227 is about 223.3524225657.

Adding to 11142227 its reverse (72224111), we get a palindrome (83366338).

It can be divided in two parts, 1114 and 2227, that multiplied together give a triangular number (2480878 = T₂₂₂₇).

The spelling of 11142227 in words is "eleven million, one hundred forty-two thousand, two hundred twenty-seven".