diff --git a/django/utils/translation/__init__.py b/django/utils/translation/__init__.py
index 6be664550d..0318247514 100644
--- a/django/utils/translation/__init__.py
+++ b/django/utils/translation/__init__.py
@@ -100,7 +100,7 @@ pgettext_lazy = lazy(pgettext, six.text_type)
 
 
 def lazy_number(func, resultclass, number=None, **kwargs):
-    if isinstance(number, int):
+    if isinstance(number, six.integer_types):
         kwargs['number'] = number
         proxy = lazy(func, resultclass)(**kwargs)
     else:
diff --git a/tests/i18n/tests.py b/tests/i18n/tests.py
index 9edcec4774..35391506e5 100644
--- a/tests/i18n/tests.py
+++ b/tests/i18n/tests.py
@@ -154,6 +154,17 @@ class TranslationTests(TestCase):
             with six.assertRaisesRegex(self, KeyError, 'Your dictionary lacks key.*'):
                 complex_context_deferred % {'name': 'Jim'}
 
+    @skipUnless(six.PY2, "PY3 doesn't distinct int and long types")
+    def test_ungettext_lazy_long(self):
+        """
+        Regression test for #22820: int and long should be treated alike in ungettext_lazy.
+        """
+        result = ungettext_lazy('%(name)s has %(num)d good result', '%(name)s has %(num)d good results', 4)
+        self.assertEqual(result % {'name': 'Joe', 'num': 4}, "Joe has 4 good results")
+        # Now with a long
+        result = ungettext_lazy('%(name)s has %(num)d good result', '%(name)s has %(num)d good results', long(4))
+        self.assertEqual(result % {'name': 'Joe', 'num': 4}, "Joe has 4 good results")
+
     @override_settings(LOCALE_PATHS=extended_locale_paths)
     def test_pgettext(self):
         trans_real._active = local()