12120199957 has 2 divisors, whose sum is σ = 12120199958. Its totient is φ = 12120199956.

The previous prime is 12120199939. The next prime is 12120199967. The reversal of 12120199957 is 75999102121.

12120199957 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 can be written as a sum of positive squares in only one way, i.e., 9386896996 + 2733302961 = 96886^2 + 52281^2 .

It is a cyclic number.

It is not a de Polignac number, because 12120199957 - 2¹⁹ = 12119675669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12120199967) 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, 6060099978 + 6060099979.

It is an arithmetic number, because the mean of its divisors is an integer number (6060099979).

Almost surely, 2^12120199957 is an apocalyptic number.

It is an amenable number.

12120199957 is a deficient number, since it is larger than the sum of its proper divisors (1).

12120199957 is an equidigital number, since it uses as much as digits as its factorization.

12120199957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102060, while the sum is 46.

The spelling of 12120199957 in words is "twelve billion, one hundred twenty million, one hundred ninety-nine thousand, nine hundred fifty-seven".