12111110243 has 4 divisors (see below), whose sum is σ = 12111464088. Its totient is φ = 12110756400.

The previous prime is 12111110237. The next prime is 12111110257. The reversal of 12111110243 is 34201111121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34201111121 = 359 ⋅95267719.

It is a cyclic number.

It is not a de Polignac number, because 12111110243 - 2³² = 7816142947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12111110203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119333 + ... + 196118.

It is an arithmetic number, because the mean of its divisors is an integer number (3027866022).

Almost surely, 2^12111110243 is an apocalyptic number.

12111110243 is a deficient number, since it is larger than the sum of its proper divisors (353845).

12111110243 is an equidigital number, since it uses as much as digits as its factorization.

12111110243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353844.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 12111110243 its reverse (34201111121), we get a palindrome (46312221364).

The spelling of 12111110243 in words is "twelve billion, one hundred eleven million, one hundred ten thousand, two hundred forty-three".