what is the {point in time} for {Mozambique} has {number of out of school children} as {2.12586e+06} ?
This input question makes no sense and impossible to paraphrase accurately
Which year the Mozambique has 2.12586e+06 number of out of school children?
SELECT ?t WHERE { ?q property:point_in_time ?t . ?q property:number_of_out-of-school_children ?f . resource:Mozambique property:number_of_out-of-school_children ?q . FILTER ( CONTAINS ( ?f , '2.12586e+06' ) ) }
select distinct ?value  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q1029> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P2573> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <2.12586e+06> .
?statement <http://www.wikidata.org/entity/P585> ?value. 
} 

SELECT ?value WHERE { wd:Q1029 p:P2573 ?s . ?s ps:P2573 ?x filter(contains(?x , '2.12586e+06')) . ?s pq:P585 ?value}