102001217 has 2 divisors, whose sum is σ = 102001218. Its totient is φ = 102001216.

The previous prime is 102001201. The next prime is 102001247. The reversal of 102001217 is 712100201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79637776 + 22363441 = 8924^2 + 4729^2 .

It is a cyclic number.

It is not a de Polignac number, because 102001217 - 2⁴ = 102001201 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (102001247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51000608 + 51000609.

It is an arithmetic number, because the mean of its divisors is an integer number (51000609).

Almost surely, 2^102001217 is an apocalyptic number.

It is an amenable number.

102001217 is a deficient number, since it is larger than the sum of its proper divisors (1).

102001217 is an equidigital number, since it uses as much as digits as its factorization.

102001217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 102001217 is about 10099.5651886604. The cubic root of 102001217 is about 467.2347310713.

Adding to 102001217 its reverse (712100201), we get a palindrome (814101418).

The spelling of 102001217 in words is "one hundred two million, one thousand, two hundred seventeen".