Declension table of ?sampādyatva

Neuter	Singular	Dual	Plural
Nominative	sampādyatvam	sampādyatve	sampādyatvāni
Vocative	sampādyatva	sampādyatve	sampādyatvāni
Accusative	sampādyatvam	sampādyatve	sampādyatvāni
Instrumental	sampādyatvena	sampādyatvābhyām	sampādyatvaiḥ
Dative	sampādyatvāya	sampādyatvābhyām	sampādyatvebhyaḥ
Ablative	sampādyatvāt	sampādyatvābhyām	sampādyatvebhyaḥ
Genitive	sampādyatvasya	sampādyatvayoḥ	sampādyatvānām
Locative	sampādyatve	sampādyatvayoḥ	sampādyatveṣu

Compound sampādyatva -

Adverb -sampādyatvam -sampādyatvāt