TOKYO, Dec 1 (Reuters) - Japan's Nikkei average rose more than 2 percent to a two-week closing high on Tuesday after the Bank of Japan said it would hold an extraordinary policy meeting, sparking speculation it might take steps to support the economy.

The benchmark Nikkei .N225 climbed 2.4 percent to 9,572.20, its highest close since Nov. 18.

The broader Topix .TOPX gained 2.1 percent to 857.76.

Exporters such as Honda Motor (7267.T: Quote, Profile, Research) recovered ground to help boost the market, while Shionogi & Co (4507.T: Quote, Profile, Research) jumped after the Nikkei business daily said health authorities had granted it a priority review for its flu drug. (Reporting by Aiko Hayashi) ((aiko.hayashi@thomsonreuters.com; Reuters Messaging: aiko.hayashi.reuters.com@reuters.net; +81 3 6441 1802)) ((If you have a query or comment on this story send an email to news.feedback.asia@thomsonreuters.com)) ((Multimedia versions of Reuters Top News are now available for: * 3000 Xtra : visit topnews.session.rservices.com * BridgeStation: view story .134 * Reuters Plus: from your WebDSS screen For more information on Top News, visit topnews.reuters.com))