210001220000017 has 2 divisors, whose sum is σ = 210001220000018. Its totient is φ = 210001220000016.

The previous prime is 210001219999957. The next prime is 210001220000021. The reversal of 210001220000017 is 710000022100012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105701243394321 + 104299976605696 = 10281111^2 + 10212736^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210001220000017 is a prime.

It is not a weakly prime, because it can be changed into another prime (210001220001017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105000610000008 + 105000610000009.

It is an arithmetic number, because the mean of its divisors is an integer number (105000610000009).

Almost surely, 2^{210001220000017} is an apocalyptic number.

It is an amenable number.

210001220000017 is a deficient number, since it is larger than the sum of its proper divisors (1).

210001220000017 is an equidigital number, since it uses as much as digits as its factorization.

210001220000017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 16.

Adding to 210001220000017 its reverse (710000022100012), we get a palindrome (920001242100029).

The spelling of 210001220000017 in words is "two hundred ten trillion, one billion, two hundred twenty million, seventeen", and thus it is an aban number.