When I say "sexless", I mean that they are born without male or female phenotypic sex. Not identifying or being nonbinary, but Anatomically sexless. Note: This is not to offend anyone who identifies as nonbinary, and sorry if this is worded incorrectly.

If it is possible, can a person (human for this scenario), be born literally with no sex physically, and having no genitals of either gender?

Although, there are problems to mention, like the X and Y chromosomes, (genotypic sex) so it could help to discuss how to deal with the chromosome problem and others.