Diffrence between Auto and Void?

I am reading the C++ Primer (fifth edition) and I have a question. It says:

The type void* is a special pointer type that can hold the address of any object. Like any other pointer, a void* pointer holds an address, but the type of the object at that address is unknown.

Ok, so I understand that but… I have many contradictions. First of all, can't you use auto? Doesn't it do the same thing as void? Meaning isn't

void *somePtr;

and

auto *somePtr;

the same?

Second of all it says the type of the attached address is unknown. Can't you use typeid to get the type? Like this:

int a = 5;
auto *somePtr = 5;
std::cout << typeid(*somePtr).name(); << std::endl;