Why SQL table name cannot start with numeric?

I am new to C# and SQL.

Using the following code I am trying to create new table and all went good as I wanted but the problem is: using textBox if I name a table starts with numbers (123MytableName) it throws error saying " Incorrect syntax near '123MytableName'"

              using (SqlConnection MyConnection = new SqlConnection())
              using (SqlCommand MySQLCommand = new SqlCommand())              
            {


                MyConnection.ConnectionString = " Data Source=localhost; Initial Catalog=TestDB ;Integrated Security=true;Max Pool Size=1024; Pooling=true";

                MyConnection.Open();

                MySQLCommand.CommandText = "CREATE TABLE "+textBox1.Text+" (Col1 int, Col2 varchar(50), Col money)";
                MySQLCommand.Connection = MyConnection;
                MySQLCommand.ExecuteNonQuery();
           }

I read this but it did not help.

Anyone knows how to fix it so I can create table which starts with numbers?

Thank you