There are more words but they are from Tolkien's earlier conceptional periods. Tolkien likely changed these words as he evolved the aesthetics and completeness of the languages. You may even find languages that Tolkien later rejected. Do not mix words from different time periods unless you are familiar with the phonetic developments.
yukainenya
ordinal. twentieth
min-yukainen(ya)
ordinal. twenty first
minya yukainen(ya)
ordinal. twenty first
A word for “twenty first” in the Early Qenya Grammar (EQG) of the 1920s appearing as minya yukainen(ya) or min-yukainenya, based on ᴱQ. minya yukainen or min yukainen “twenty one” (PE14/51, 82).
Below: Tolkien's Late Period (1950–1973). These are from Tolkien's late conceptual period — his most settled forms of the languages. Prefer these over the earlier ones above when composing new text.
A word for “twentieth” in the Early Qenya Grammar (EQG) of the 1920s based on ᴱQ. yukainen “twenty” (PE14/51, 82).