201020385017 has 2 divisors, whose sum is σ = 201020385018. Its totient is φ = 201020385016.

The previous prime is 201020385001. The next prime is 201020385029. The reversal of 201020385017 is 710583020102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110088585616 + 90931799401 = 331796^2 + 301549^2 .

It is a cyclic number.

It is not a de Polignac number, because 201020385017 - 2⁴ = 201020385001 is a prime.

It is not a weakly prime, because it can be changed into another prime (201020385817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510192508 + 100510192509.

It is an arithmetic number, because the mean of its divisors is an integer number (100510192509).

Almost surely, 2^201020385017 is an apocalyptic number.

It is an amenable number.

201020385017 is a deficient number, since it is larger than the sum of its proper divisors (1).

201020385017 is an equidigital number, since it uses as much as digits as its factorization.

201020385017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 29.

The spelling of 201020385017 in words is "two hundred one billion, twenty million, three hundred eighty-five thousand, seventeen".