2101220220017 has 2 divisors, whose sum is σ = 2101220220018. Its totient is φ = 2101220220016.

The previous prime is 2101220219983. The next prime is 2101220220023. The reversal of 2101220220017 is 7100220221012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1658761109041 + 442459110976 = 1287929^2 + 665176^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101220220017 - 2¹² = 2101220215921 is a prime.

It is not a weakly prime, because it can be changed into another prime (2101220220067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050610110008 + 1050610110009.

It is an arithmetic number, because the mean of its divisors is an integer number (1050610110009).

Almost surely, 2^{2101220220017} is an apocalyptic number.

It is an amenable number.

2101220220017 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101220220017 is an equidigital number, since it uses as much as digits as its factorization.

2101220220017 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 20.

Adding to 2101220220017 its reverse (7100220221012), we get a palindrome (9201440441029).

The spelling of 2101220220017 in words is "two trillion, one hundred one billion, two hundred twenty million, two hundred twenty thousand, seventeen".