12101011243 has 2 divisors, whose sum is σ = 12101011244. Its totient is φ = 12101011242.

The previous prime is 12101011207. The next prime is 12101011249. The reversal of 12101011243 is 34211010121.

12101011243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12101011243 is a prime.

It is not a weakly prime, because it can be changed into another prime (12101011249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6050505621 + 6050505622.

It is an arithmetic number, because the mean of its divisors is an integer number (6050505622).

Almost surely, 2^12101011243 is an apocalyptic number.

12101011243 is a deficient number, since it is larger than the sum of its proper divisors (1).

12101011243 is an equidigital number, since it uses as much as digits as its factorization.

12101011243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12101011243 its reverse (34211010121), we get a palindrome (46312021364).

The spelling of 12101011243 in words is "twelve billion, one hundred one million, eleven thousand, two hundred forty-three".