1200020010017 has 2 divisors, whose sum is σ = 1200020010018. Its totient is φ = 1200020010016.

The previous prime is 1200020009963. The next prime is 1200020010019. The reversal of 1200020010017 is 7100100200021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1195980644881 + 4039365136 = 1093609^2 + 63556^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200020010017 - 2¹⁴ = 1200019993633 is a prime.

Together with 1200020010019, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1200020009983 and 1200020010010.

It is not a weakly prime, because it can be changed into another prime (1200020010019) 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, 600010005008 + 600010005009.

It is an arithmetic number, because the mean of its divisors is an integer number (600010005009).

Almost surely, 2^{1200020010017} is an apocalyptic number.

It is an amenable number.

1200020010017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200020010017 is an equidigital number, since it uses as much as digits as its factorization.

1200020010017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28, while the sum is 14.

Adding to 1200020010017 its reverse (7100100200021), we get a palindrome (8300120210038).

The spelling of 1200020010017 in words is "one trillion, two hundred billion, twenty million, ten thousand, seventeen".