<p><pre><code> There are only 11 million bitcoins in existence, and there
can never be more than 21 million, so it’s not a very liquid
market. If a way ever emerges to break bitcoins up into even
smaller fractions, that might solve the problem
</code></pre>
Bitcoins can be broken down.<p>1 BTC = 10^8 Satoshis.<p>So 21 million bitcoins are actually (21x10^6)x10^8 = 21x10^14 units of currency.