Declension table of amṛtatva

Neuter	Singular	Dual	Plural
Nominative	amṛtatvam	amṛtatve	amṛtatvāni
Vocative	amṛtatva	amṛtatve	amṛtatvāni
Accusative	amṛtatvam	amṛtatve	amṛtatvāni
Instrumental	amṛtatvena	amṛtatvābhyām	amṛtatvaiḥ
Dative	amṛtatvāya	amṛtatvābhyām	amṛtatvebhyaḥ
Ablative	amṛtatvāt	amṛtatvābhyām	amṛtatvebhyaḥ
Genitive	amṛtatvasya	amṛtatvayoḥ	amṛtatvānām
Locative	amṛtatve	amṛtatvayoḥ	amṛtatveṣu

Compound amṛtatva -

Adverb -amṛtatvam -amṛtatvāt