12123050689 has 2 divisors, whose sum is σ = 12123050690. Its totient is φ = 12123050688.

The previous prime is 12123050603. The next prime is 12123050711. The reversal of 12123050689 is 98605032121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10317480625 + 1805570064 = 101575^2 + 42492^2 .

It is an emirp because it is prime and its reverse (98605032121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12123050689 - 2²⁹ = 11586179777 is a prime.

It is not a weakly prime, because it can be changed into another prime (12123050189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061525344 + 6061525345.

It is an arithmetic number, because the mean of its divisors is an integer number (6061525345).

Almost surely, 2^12123050689 is an apocalyptic number.

It is an amenable number.

12123050689 is a deficient number, since it is larger than the sum of its proper divisors (1).

12123050689 is an equidigital number, since it uses as much as digits as its factorization.

12123050689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 12123050689 in words is "twelve billion, one hundred twenty-three million, fifty thousand, six hundred eighty-nine".