12118243 has 2 divisors, whose sum is σ = 12118244. Its totient is φ = 12118242.

The previous prime is 12118237. The next prime is 12118273. The reversal of 12118243 is 34281121.

It is a happy number.

12118243 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12118243 is a prime.

It is not a weakly prime, because it can be changed into another prime (12118273) 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, 6059121 + 6059122.

It is an arithmetic number, because the mean of its divisors is an integer number (6059122).

Almost surely, 2^12118243 is an apocalyptic number.

12118243 is a deficient number, since it is larger than the sum of its proper divisors (1).

12118243 is an equidigital number, since it uses as much as digits as its factorization.

12118243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 384, while the sum is 22.

The square root of 12118243 is about 3481.1266854282. The cubic root of 12118243 is about 229.6923612250.

Adding to 12118243 its reverse (34281121), we get a palindrome (46399364).

The spelling of 12118243 in words is "twelve million, one hundred eighteen thousand, two hundred forty-three".