12120643273 has 4 divisors (see below), whose sum is σ = 12120876180. Its totient is φ = 12120410368.

The previous prime is 12120643253. The next prime is 12120643279. The reversal of 12120643273 is 37234602121.

It is a happy number.

12120643273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37234602121 = 17 ⋅2190270713.

It can be written as a sum of positive squares in 2 ways, for example, as 2549543049 + 9571100224 = 50493^2 + 97832^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12120643273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12120643279) 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 in 3 ways as a sum of consecutive naturals, for example, 1293 + ... + 155701.

It is an arithmetic number, because the mean of its divisors is an integer number (3030219045).

Almost surely, 2^12120643273 is an apocalyptic number.

It is an amenable number.

12120643273 is a deficient number, since it is larger than the sum of its proper divisors (232907).

12120643273 is an equidigital number, since it uses as much as digits as its factorization.

12120643273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232906.

The product of its (nonzero) digits is 12096, while the sum is 31.

The spelling of 12120643273 in words is "twelve billion, one hundred twenty million, six hundred forty-three thousand, two hundred seventy-three".