Wire:model and the default value

I want to set a default value of an input.
It is shown for a second and then it disappears.

Now I have the solution

blade:

<div >
    <input wire:model.lazy="vp" class="border-2 border-gray-500 pl-4 py-1" type="number" id="pippo" name="nm_pippo">
    <p1>{{$vp}}</p1>
</div>

class:

namespace App\Http\Livewire;
use Livewire\Component;
class Lprova extends Component
{
public $vp;

public function mount(){
       $this->vp=123;
 }

public function render()
 {
       return view('livewire.lprova');
 }

}

thanks