2001202102217 has 2 divisors, whose sum is σ = 2001202102218. Its totient is φ = 2001202102216.

The previous prime is 2001202102201. The next prime is 2001202102253. The reversal of 2001202102217 is 7122012021002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1698301569721 + 302900532496 = 1303189^2 + 550364^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001202102217 - 2⁴ = 2001202102201 is a prime.

It is not a weakly prime, because it can be changed into another prime (2001202102297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000601051108 + 1000601051109.

It is an arithmetic number, because the mean of its divisors is an integer number (1000601051109).

Almost surely, 2^{2001202102217} is an apocalyptic number.

It is an amenable number.

2001202102217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001202102217 is an equidigital number, since it uses as much as digits as its factorization.

2001202102217 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 2001202102217 its reverse (7122012021002), we get a palindrome (9123214123219).

The spelling of 2001202102217 in words is "two trillion, one billion, two hundred two million, one hundred two thousand, two hundred seventeen".