12111445243 has 2 divisors, whose sum is σ = 12111445244. Its totient is φ = 12111445242.

The previous prime is 12111445237. The next prime is 12111445259. The reversal of 12111445243 is 34254411121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12111445243 is a prime.

It is not a weakly prime, because it can be changed into another prime (12117445243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055722621 + 6055722622.

It is an arithmetic number, because the mean of its divisors is an integer number (6055722622).

Almost surely, 2^12111445243 is an apocalyptic number.

12111445243 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111445243 is an equidigital number, since it uses as much as digits as its factorization.

12111445243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 28.

Adding to 12111445243 its reverse (34254411121), we get a palindrome (46365856364).

The spelling of 12111445243 in words is "twelve billion, one hundred eleven million, four hundred forty-five thousand, two hundred forty-three".