How to make the program automatically recognize input as int or str?

Question

My question is simple: I want to create a code that the user type anything and the program returns some information about what he typed. (type, characters, etc.). It is a very simple program, but the idea is to understand how I can make the input to stop being always str and be what the user typed. Example: If he typed a number, I want it to be converted into an int and if it was text, let it look like str.

# NÃO CONSEGUI RESOLVER

    a=input('Digite qualquer coisa: ')
    print(type(a))
    print('Possui',len(a),'caracteres')
    # Se o caractere digitado for uma int, eu quero que caia no if. Não sei como fazer isso pq no input, por padrão sempre é str
    if type(a)==int:
        if a%2==0:
            print("Par")
        else:
            print("Ímpar")

If I set input at the beginning of the code as int, the Len() function does not work. How can I fix this too?