102011001217 has 2 divisors, whose sum is σ = 102011001218. Its totient is φ = 102011001216.

The previous prime is 102011001187. The next prime is 102011001277. The reversal of 102011001217 is 712100110201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58080518001 + 43930483216 = 240999^2 + 209596^2 .

It is an emirp because it is prime and its reverse (712100110201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102011001217 - 2⁷ = 102011001089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102011001217.

It is not a weakly prime, because it can be changed into another prime (102011001277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51005500608 + 51005500609.

It is an arithmetic number, because the mean of its divisors is an integer number (51005500609).

Almost surely, 2^102011001217 is an apocalyptic number.

It is an amenable number.

102011001217 is a deficient number, since it is larger than the sum of its proper divisors (1).

102011001217 is an equidigital number, since it uses as much as digits as its factorization.

102011001217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28, while the sum is 16.

Adding to 102011001217 its reverse (712100110201), we get a palindrome (814111111418).

The spelling of 102011001217 in words is "one hundred two billion, eleven million, one thousand, two hundred seventeen".