1206120017 has 2 divisors, whose sum is σ = 1206120018. Its totient is φ = 1206120016.

The previous prime is 1206119987. The next prime is 1206120031. The reversal of 1206120017 is 7100216021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1192251841 + 13868176 = 34529^2 + 3724^2 .

It is an emirp because it is prime and its reverse (7100216021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1206120017 - 2¹² = 1206115921 is a prime.

It is not a weakly prime, because it can be changed into another prime (1206120917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 603060008 + 603060009.

It is an arithmetic number, because the mean of its divisors is an integer number (603060009).

Almost surely, 2^1206120017 is an apocalyptic number.

It is an amenable number.

1206120017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1206120017 is an equidigital number, since it uses as much as digits as its factorization.

1206120017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 1206120017 is about 34729.2386469960. The cubic root of 1206120017 is about 1064.4620313400.

Adding to 1206120017 its reverse (7100216021), we get a palindrome (8306336038).

The spelling of 1206120017 in words is "one billion, two hundred six million, one hundred twenty thousand, seventeen".