2020221204817 has 2 divisors, whose sum is σ = 2020221204818. Its totient is φ = 2020221204816.

The previous prime is 2020221204773. The next prime is 2020221204863. The reversal of 2020221204817 is 7184021220202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1884678682896 + 135542521921 = 1372836^2 + 368161^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020221204817 - 2¹⁹ = 2020220680529 is a prime.

It is not a weakly prime, because it can be changed into another prime (2020228204817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010110602408 + 1010110602409.

It is an arithmetic number, because the mean of its divisors is an integer number (1010110602409).

Almost surely, 2^{2020221204817} is an apocalyptic number.

It is an amenable number.

2020221204817 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020221204817 is an equidigital number, since it uses as much as digits as its factorization.

2020221204817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7168, while the sum is 31.

The spelling of 2020221204817 in words is "two trillion, twenty billion, two hundred twenty-one million, two hundred four thousand, eight hundred seventeen".