How To Display The Formatted Number / Date In Visual Force? Which Component Should Be Used?

Adding code snippet

<apex:page controller="DmVFcheck_CC" >
<apex:form>

<apex:inputField value="{!evento.StartDateTime}" >
<apex:actionSupport event="onchange" action="{!functionName}" reRender="renderOp1"/>
</apex:inputField>
<apex:outputPanel id="renderOp1">

<apex:outputText value="{0, date,dd MMMM yyyy}">

<apex:param value="{!evenDate}" />
</apex:outputText>

</apex:outputPanel>

</apex:form>
</apex:page>