Women are born with all their eggs while men produce sperm cells everyday.

What sperm cells lack in size, they make up in quantity. The normal male will create around 525 billion sperm cells over his lifetime and shed no less than one billion of them for each month. A grown-up male can release between 40 million and 1.2 billion sperm cells in a solitary discharge. 

Interestingly, ladies are conceived with about two million egg follicles, the precursor structures that offer ascent to eggs. By puberty, most of those follicles would have degenerated, leaving about 300,000. In woman's lifetime, just around 450 will ever be discharged during the monthly ovulation as fully matured eggs.