12123110243 has 2 divisors, whose sum is σ = 12123110244. Its totient is φ = 12123110242.

The previous prime is 12123110239. The next prime is 12123110281. The reversal of 12123110243 is 34201132121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12123110243 - 2² = 12123110239 is a prime.

It is a super-3 number, since 3×12123110243³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (12123110843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061555121 + 6061555122.

It is an arithmetic number, because the mean of its divisors is an integer number (6061555122).

Almost surely, 2^12123110243 is an apocalyptic number.

12123110243 is a deficient number, since it is larger than the sum of its proper divisors (1).

12123110243 is an equidigital number, since it uses as much as digits as its factorization.

12123110243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12123110243 its reverse (34201132121), we get a palindrome (46324242364).

The spelling of 12123110243 in words is "twelve billion, one hundred twenty-three million, one hundred ten thousand, two hundred forty-three".