概要

using TMPro;
using UnityEngine;

public class Example : MonoBehaviour
{
    public TMP_Text m_tmpText;

    private void Awake()
    {
        m_tmpText.SetText( "{0}", 10_000_001 );
    }
}

検証環境

• Unity 2020.2.2f1
• TextMeshPro 3.0.1