how is the data on the X axis formatted as Y?

$(function () {

 Highcharts.setOptions({
        lang: {
            numericSymbols: ["k" , "M" , "G" , "T" , "P" , "E"],
        },
    }),

 Highcharts.chart("containers", {
     plotOptions: {
                    column:{
                        dataLabels:{
                            enabled:true, // dataLabelstrue
                            style:{
                                color:"-sharpD7DEE9"
                            }
                        }
                    }
      },

     credits:{
            enabled: false
        },
    exporting: {
         enabled: false
    },
    chart: {
        type: "column",
        alignTicks: false
    },
    title: {
        text: ""
    },
    yAxis: {
            labels: {

            },
            title: {
                text: ""
            }
        },
        legend: {
            enabled: false
        },

     xAxis: {
         lables:{
           formatter: function() {

            }
         },
        categories:
            ["tests"]
    },

    series: [{
        showInLegend: false,
        name: "",
        data: [
            [11111111111]
        ]
    }],
    responsive: {
        rules: [{
            condition: {
                maxWidth: 500
            },
            // Make the labels less space demanding on mobile
            chartOptions: {
                xAxis: {
                    labels: {
                        formatter: function () {
                            return this.value.replace("", "")
                        }
                    }
                },
                yAxis: {
                    labels: {
                        align: "left",
                        x: 0,
                        y: -2
                    },
                    title: {
                        text: ""
                    }
                }
            }
        }]
    }
});
 });
function setSize(width) {
    chart.setSize(width, 300);
}