20116122217 has 2 divisors, whose sum is σ = 20116122218. Its totient is φ = 20116122216.

The previous prime is 20116122179. The next prime is 20116122241. The reversal of 20116122217 is 71222161102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11164880896 + 8951241321 = 105664^2 + 94611^2 .

It is a cyclic number.

It is not a de Polignac number, because 20116122217 - 2¹⁵ = 20116089449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20116122191 and 20116122200.

It is not a weakly prime, because it can be changed into another prime (20116122017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10058061108 + 10058061109.

It is an arithmetic number, because the mean of its divisors is an integer number (10058061109).

Almost surely, 2^20116122217 is an apocalyptic number.

It is an amenable number.

20116122217 is a deficient number, since it is larger than the sum of its proper divisors (1).

20116122217 is an equidigital number, since it uses as much as digits as its factorization.

20116122217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 25.

Adding to 20116122217 its reverse (71222161102), we get a palindrome (91338283319).

The spelling of 20116122217 in words is "twenty billion, one hundred sixteen million, one hundred twenty-two thousand, two hundred seventeen".