diff --git a/lib/vocabularies/validation/multipleOf.ts b/lib/vocabularies/validation/multipleOf.ts
index 1fd79abbd..f0e0b1f01 100644
--- a/lib/vocabularies/validation/multipleOf.ts
+++ b/lib/vocabularies/validation/multipleOf.ts
@@ -26,7 +26,7 @@ const def: CodeKeywordDefinition = {
     const res = gen.let("res")
     const invalid = prec
       ? _`Math.abs(Math.round(${res}) - ${res}) > 1e-${prec}`
-      : _`${res} !== parseInt(${res})`
+      : _`${res} % 1 !== 0`
     cxt.fail$data(_`(${schemaCode} === 0 || (${res} = ${data}/${schemaCode}, ${invalid}))`)
   },
 }
diff --git a/spec/tests/issues/large_integer_with_multiple_of.json b/spec/tests/issues/large_integer_with_multiple_of.json
new file mode 100644
index 000000000..d80391eb4
--- /dev/null
+++ b/spec/tests/issues/large_integer_with_multiple_of.json
@@ -0,0 +1,13 @@
+[
+  {
+    "description": "large integer is multiple of 1",
+    "schema": {"multipleOf": 1},
+    "tests": [
+      {
+        "description": "1e21 is multiple of 1",
+        "data": 1e21,
+        "valid": true
+      }
+    ]
+  }
+]