12123133289 has 2 divisors, whose sum is σ = 12123133290. Its totient is φ = 12123133288.

The previous prime is 12123133259. The next prime is 12123133333. The reversal of 12123133289 is 98233132121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8180298025 + 3942835264 = 90445^2 + 62792^2 .

It is an emirp because it is prime and its reverse (98233132121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12123133289 - 2¹⁶ = 12123067753 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12123133249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061566644 + 6061566645.

It is an arithmetic number, because the mean of its divisors is an integer number (6061566645).

Almost surely, 2^12123133289 is an apocalyptic number.

It is an amenable number.

12123133289 is a deficient number, since it is larger than the sum of its proper divisors (1).

12123133289 is an equidigital number, since it uses as much as digits as its factorization.

12123133289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 35.

The spelling of 12123133289 in words is "twelve billion, one hundred twenty-three million, one hundred thirty-three thousand, two hundred eighty-nine".