2021202020017 has 2 divisors, whose sum is σ = 2021202020018. Its totient is φ = 2021202020016.

The previous prime is 2021202020011. The next prime is 2021202020081. The reversal of 2021202020017 is 7100202021202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1969632606096 + 51569413921 = 1403436^2 + 227089^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021202020017 - 2¹¹ = 2021202017969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2021202019976 and 2021202020003.

It is not a weakly prime, because it can be changed into another prime (2021202020011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010601010008 + 1010601010009.

It is an arithmetic number, because the mean of its divisors is an integer number (1010601010009).

Almost surely, 2^{2021202020017} is an apocalyptic number.

It is an amenable number.

2021202020017 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021202020017 is an equidigital number, since it uses as much as digits as its factorization.

2021202020017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 19.

Adding to 2021202020017 its reverse (7100202021202), we get a palindrome (9121404041219).

The spelling of 2021202020017 in words is "two trillion, twenty-one billion, two hundred two million, twenty thousand, seventeen".