2112434430217 has 2 divisors, whose sum is σ = 2112434430218. Its totient is φ = 2112434430216.

The previous prime is 2112434430121. The next prime is 2112434430241. The reversal of 2112434430217 is 7120344342112.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1937786497936 + 174647932281 = 1392044^2 + 417909^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112434430217 - 2³¹ = 2110286946569 is a prime.

It is not a weakly prime, because it can be changed into another prime (2112434430017) 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, 1056217215108 + 1056217215109.

It is an arithmetic number, because the mean of its divisors is an integer number (1056217215109).

Almost surely, 2^{2112434430217} is an apocalyptic number.

It is an amenable number.

2112434430217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112434430217 is an equidigital number, since it uses as much as digits as its factorization.

2112434430217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 34.

Adding to 2112434430217 its reverse (7120344342112), we get a palindrome (9232778772329).

The spelling of 2112434430217 in words is "two trillion, one hundred twelve billion, four hundred thirty-four million, four hundred thirty thousand, two hundred seventeen".