12120020102117 has 2 divisors, whose sum is σ = 12120020102118. Its totient is φ = 12120020102116.

The previous prime is 12120020102077. The next prime is 12120020102129. The reversal of 12120020102117 is 71120102002121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7734622892161 + 4385397209956 = 2781119^2 + 2094134^2 .

It is a cyclic number.

It is not a de Polignac number, because 12120020102117 - 2¹⁰ = 12120020101093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12120020105117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060010051058 + 6060010051059.

It is an arithmetic number, because the mean of its divisors is an integer number (6060010051059).

Almost surely, 2^{12120020102117} is an apocalyptic number.

It is an amenable number.

12120020102117 is a deficient number, since it is larger than the sum of its proper divisors (1).

12120020102117 is an equidigital number, since it uses as much as digits as its factorization.

12120020102117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 12120020102117 its reverse (71120102002121), we get a palindrome (83240122104238).

The spelling of 12120020102117 in words is "twelve trillion, one hundred twenty billion, twenty million, one hundred two thousand, one hundred seventeen".