11772227 has 4 divisors (see below), whose sum is σ = 11876520. Its totient is φ = 11667936.

The previous prime is 11772221. The next prime is 11772263. The reversal of 11772227 is 72227711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72227711 = 53 ⋅1362787.

It is a cyclic number.

It is not a de Polignac number, because 11772227 - 2²² = 7577923 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11772227.

It is not an unprimeable number, because it can be changed into a prime (11772221) 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, 51977 + ... + 52202.

It is an arithmetic number, because the mean of its divisors is an integer number (2969130).

Almost surely, 2^11772227 is an apocalyptic number.

11772227 is a deficient number, since it is larger than the sum of its proper divisors (104293).

11772227 is a wasteful number, since it uses less digits than its factorization.

11772227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104292.

The product of its digits is 2744, while the sum is 29.

The square root of 11772227 is about 3431.0679095582. The cubic root of 11772227 is about 227.4850579890.

Adding to 11772227 its reverse (72227711), we get a palindrome (83999938).

The spelling of 11772227 in words is "eleven million, seven hundred seventy-two thousand, two hundred twenty-seven".