The nullptr and NULL compatibilty

Question | Sep 10, 2015 | nextptr 

For long C++ developers used an integral constant value NULL to denote null pointers. This approach always had the risk of implicit conversion to integral data types. Finally C++11 has introduced keyword nullptr that can be used to denote a null pointer. e.g

char* ptr = nullptr;

Which one of the followings is not true about nullptr?

2015 nextptr