11218247 has 2 divisors, whose sum is σ = 11218248. Its totient is φ = 11218246.

The previous prime is 11218241. The next prime is 11218253. The reversal of 11218247 is 74281211.

It is a balanced prime because it is at equal distance from previous prime (11218241) and next prime (11218253).

It is a cyclic number.

It is not a de Polignac number, because 11218247 - 2⁴ = 11218231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11218241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5609123 + 5609124.

It is an arithmetic number, because the mean of its divisors is an integer number (5609124).

Almost surely, 2^11218247 is an apocalyptic number.

11218247 is a deficient number, since it is larger than the sum of its proper divisors (1).

11218247 is an equidigital number, since it uses as much as digits as its factorization.

11218247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 896, while the sum is 26.

The square root of 11218247 is about 3349.3651637288. The cubic root of 11218247 is about 223.8592267598.

Adding to 11218247 its reverse (74281211), we get a palindrome (85499458).

The spelling of 11218247 in words is "eleven million, two hundred eighteen thousand, two hundred forty-seven".