20201322017 has 2 divisors, whose sum is σ = 20201322018. Its totient is φ = 20201322016.

The previous prime is 20201322013. The next prime is 20201322091. The reversal of 20201322017 is 71022310202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18945044881 + 1256277136 = 137641^2 + 35444^2 .

It is a cyclic number.

It is not a de Polignac number, because 20201322017 - 2² = 20201322013 is a prime.

It is a super-2 number, since 2×20201322017² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20201322017.

It is not a weakly prime, because it can be changed into another prime (20201322013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100661008 + 10100661009.

It is an arithmetic number, because the mean of its divisors is an integer number (10100661009).

Almost surely, 2^20201322017 is an apocalyptic number.

It is an amenable number.

20201322017 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201322017 is an equidigital number, since it uses as much as digits as its factorization.

20201322017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 20.

Adding to 20201322017 its reverse (71022310202), we get a palindrome (91223632219).

The spelling of 20201322017 in words is "twenty billion, two hundred one million, three hundred twenty-two thousand, seventeen".