201020112201017 has 2 divisors, whose sum is σ = 201020112201018. Its totient is φ = 201020112201016.

The previous prime is 201020112200939. The next prime is 201020112201143. The reversal of 201020112201017 is 710102211020102.

It is a happy number.

201020112201017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199631495068201 + 1388617132816 = 14129101^2 + 1178396^2 .

It is a cyclic number.

It is not a de Polignac number, because 201020112201017 - 2¹⁶ = 201020112135481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201020112201017.

It is not a weakly prime, because it can be changed into another prime (201020112201817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510056100508 + 100510056100509.

It is an arithmetic number, because the mean of its divisors is an integer number (100510056100509).

Almost surely, 2^{201020112201017} is an apocalyptic number.

It is an amenable number.

201020112201017 is a deficient number, since it is larger than the sum of its proper divisors (1).

201020112201017 is an equidigital number, since it uses as much as digits as its factorization.

201020112201017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 201020112201017 its reverse (710102211020102), we get a palindrome (911122323221119).

The spelling of 201020112201017 in words is "two hundred one trillion, twenty billion, one hundred twelve million, two hundred one thousand, seventeen".