2021200102217 has 2 divisors, whose sum is σ = 2021200102218. Its totient is φ = 2021200102216.

The previous prime is 2021200102213. The next prime is 2021200102247. The reversal of 2021200102217 is 7122010021202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1079477362441 + 941722739776 = 1038979^2 + 970424^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021200102217 - 2² = 2021200102213 is a prime.

It is a super-3 number, since 3×2021200102217³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (2021200102211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010600051108 + 1010600051109.

It is an arithmetic number, because the mean of its divisors is an integer number (1010600051109).

Almost surely, 2^{2021200102217} is an apocalyptic number.

It is an amenable number.

2021200102217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021200102217 is an equidigital number, since it uses as much as digits as its factorization.

2021200102217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 20.

Adding to 2021200102217 its reverse (7122010021202), we get a palindrome (9143210123419).

The spelling of 2021200102217 in words is "two trillion, twenty-one billion, two hundred million, one hundred two thousand, two hundred seventeen".