public static String format(Object x) {
		if (x != null) {
			return format(x.toString());
		} else {
			return StrUtil.EMPTY;
		}
	}
@Test
	public void testFormatLargeNumber() {
		// 测试传入大数字的情况
		String result = NumberWordFormatter.format(1234567890123L);
		assertEquals("ONE TRILLION TWO HUNDRED AND THIRTY FOUR BILLION FIVE HUNDRED AND SIXTY SEVEN MILLION EIGHT HUNDRED AND NINETY THOUSAND ONE HUNDRED AND TWENTY THREE ONLY", result);
	}