2012112222217 has 2 divisors, whose sum is σ = 2012112222218. Its totient is φ = 2012112222216.

The previous prime is 2012112222167. The next prime is 2012112222229. The reversal of 2012112222217 is 7122222112102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1055737755081 + 956374467136 = 1027491^2 + 977944^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2012112222217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2012112222191 and 2012112222200.

It is not a weakly prime, because it can be changed into another prime (2012112222247) 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, 1006056111108 + 1006056111109.

It is an arithmetic number, because the mean of its divisors is an integer number (1006056111109).

Almost surely, 2^{2012112222217} is an apocalyptic number.

It is an amenable number.

2012112222217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012112222217 is an equidigital number, since it uses as much as digits as its factorization.

2012112222217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 25.

Adding to 2012112222217 its reverse (7122222112102), we get a palindrome (9134334334319).

The spelling of 2012112222217 in words is "two trillion, twelve billion, one hundred twelve million, two hundred twenty-two thousand, two hundred seventeen".