20112202200217 has 2 divisors, whose sum is σ = 20112202200218. Its totient is φ = 20112202200216.

The previous prime is 20112202200191. The next prime is 20112202200227. The reversal of 20112202200217 is 71200220221102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15533025910416 + 4579176289801 = 3941196^2 + 2139901^2 .

It is a cyclic number.

It is not a de Polignac number, because 20112202200217 - 2⁴³ = 11316109178009 is a prime.

It is not a weakly prime, because it can be changed into another prime (20112202200227) 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, 10056101100108 + 10056101100109.

It is an arithmetic number, because the mean of its divisors is an integer number (10056101100109).

Almost surely, 2^{20112202200217} is an apocalyptic number.

It is an amenable number.

20112202200217 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112202200217 is an equidigital number, since it uses as much as digits as its factorization.

20112202200217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 22.

Adding to 20112202200217 its reverse (71200220221102), we get a palindrome (91312422421319).

The spelling of 20112202200217 in words is "twenty trillion, one hundred twelve billion, two hundred two million, two hundred thousand, two hundred seventeen".