12256720235273 has 2 divisors, whose sum is σ = 12256720235274. Its totient is φ = 12256720235272.

The previous prime is 12256720235261. The next prime is 12256720235321. The reversal of 12256720235273 is 37253202765221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9906901035529 + 2349819199744 = 3147523^2 + 1532912^2 .

It is an emirp because it is prime and its reverse (37253202765221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12256720235273 - 2¹⁴ = 12256720218889 is a prime.

It is not a weakly prime, because it can be changed into another prime (12256720235203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6128360117636 + 6128360117637.

It is an arithmetic number, because the mean of its divisors is an integer number (6128360117637).

Almost surely, 2^{12256720235273} is an apocalyptic number.

It is an amenable number.

12256720235273 is a deficient number, since it is larger than the sum of its proper divisors (1).

12256720235273 is an equidigital number, since it uses as much as digits as its factorization.

12256720235273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2116800, while the sum is 47.

The spelling of 12256720235273 in words is "twelve trillion, two hundred fifty-six billion, seven hundred twenty million, two hundred thirty-five thousand, two hundred seventy-three".