100321320217 has 2 divisors, whose sum is σ = 100321320218. Its totient is φ = 100321320216.

The previous prime is 100321320149. The next prime is 100321320293. The reversal of 100321320217 is 712023123001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79716440281 + 20604879936 = 282341^2 + 143544^2 .

It is a cyclic number.

It is not a de Polignac number, because 100321320217 - 2⁷ = 100321320089 is a prime.

It is not a weakly prime, because it can be changed into another prime (100321320017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50160660108 + 50160660109.

It is an arithmetic number, because the mean of its divisors is an integer number (50160660109).

Almost surely, 2^100321320217 is an apocalyptic number.

It is an amenable number.

100321320217 is a deficient number, since it is larger than the sum of its proper divisors (1).

100321320217 is an equidigital number, since it uses as much as digits as its factorization.

100321320217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

Adding to 100321320217 its reverse (712023123001), we get a palindrome (812344443218).

The spelling of 100321320217 in words is "one hundred billion, three hundred twenty-one million, three hundred twenty thousand, two hundred seventeen".