Splitting a string on operators but without removing them in Python

Question

I require to split a string in every operator (+,-,/,*,^), but without actually removing them

expression='x+1*number/n^11'

And what I want is to split it but in operators, but without removing them:

['x', '+', '1', '*', 'number', '/', 'n', '^', '11']

.split("operator") removes them entirely.