12020120171 has 2 divisors, whose sum is σ = 12020120172. Its totient is φ = 12020120170.

The previous prime is 12020120159. The next prime is 12020120219. The reversal of 12020120171 is 17102102021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12020120171 - 2¹⁴ = 12020103787 is a prime.

It is not a weakly prime, because it can be changed into another prime (12020125171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010060085 + 6010060086.

It is an arithmetic number, because the mean of its divisors is an integer number (6010060086).

Almost surely, 2^12020120171 is an apocalyptic number.

12020120171 is a deficient number, since it is larger than the sum of its proper divisors (1).

12020120171 is an equidigital number, since it uses as much as digits as its factorization.

12020120171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 17.

Adding to 12020120171 its reverse (17102102021), we get a palindrome (29122222192).

The spelling of 12020120171 in words is "twelve billion, twenty million, one hundred twenty thousand, one hundred seventy-one".