11227211 has 2 divisors, whose sum is σ = 11227212. Its totient is φ = 11227210.

The previous prime is 11227201. The next prime is 11227213. The reversal of 11227211 is 11272211.

It is a strong prime.

It is an emirp because it is prime and its reverse (11272211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11227211 is a prime.

Together with 11227213, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11227211.

It is not a weakly prime, because it can be changed into another prime (11227213) 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 as a sum of consecutive naturals, namely, 5613605 + 5613606.

It is an arithmetic number, because the mean of its divisors is an integer number (5613606).

Almost surely, 2^11227211 is an apocalyptic number.

11227211 is a deficient number, since it is larger than the sum of its proper divisors (1).

11227211 is an equidigital number, since it uses as much as digits as its factorization.

11227211 is an odious number, because the sum of its binary digits is odd.

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

The square root of 11227211 is about 3350.7030605531. The cubic root of 11227211 is about 223.9188361879.

Adding to 11227211 its reverse (11272211), we get a palindrome (22499422).

The spelling of 11227211 in words is "eleven million, two hundred twenty-seven thousand, two hundred eleven".