201020220017 has 2 divisors, whose sum is σ = 201020220018. Its totient is φ = 201020220016.

The previous prime is 201020219993. The next prime is 201020220053. The reversal of 201020220017 is 710022020102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176701688881 + 24318531136 = 420359^2 + 155944^2 .

It is a cyclic number.

It is not a de Polignac number, because 201020220017 - 2⁸ = 201020219761 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201020219977 and 201020220004.

It is not a weakly prime, because it can be changed into another prime (201020229017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510110008 + 100510110009.

It is an arithmetic number, because the mean of its divisors is an integer number (100510110009).

Almost surely, 2^201020220017 is an apocalyptic number.

It is an amenable number.

201020220017 is a deficient number, since it is larger than the sum of its proper divisors (1).

201020220017 is an equidigital number, since it uses as much as digits as its factorization.

201020220017 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 17.

Adding to 201020220017 its reverse (710022020102), we get a palindrome (911042240119).

The spelling of 201020220017 in words is "two hundred one billion, twenty million, two hundred twenty thousand, seventeen".