Official nameRepublik Indonesia (Republic of Indonesia)CapitalJakartaPopulation estimate (2015)257·56 millionInternet domain extension.idCurrencyThe unit of currency is the rupiah (IDR), which consists of 100 sen.TerritoryIndonesia, in the south-east of Asia, consists of 17,507 islands (6,000 of which are inhabited) extending about 3,200 miles east to west through three time-zones, and 1,250 miles north to south.LanguagesBahasa Indonesia (Indonesian) is the official language; Dutch is spoken as a colonial inheritance.Source: The Statesman's Yearbook 2018. Palgrave Macmillan, London Synonyms and related words