When that happens, the meaning is that it was not able to find a numeric integral for the expression.
When I plot the expression, I find that it is all fairly small (or extremely small) values, except between about 1.3E-7 and 9.0E-7, with the peak at about 3.5559578143593540162E-7 where it reaches about 85885.334826. It is essentially not worth integrating outside that range. The overall integral marginally exceeds 0.0106219
You could use matlabFunction() to convert the symbolic expression to a function handle, and then use integral() on that. However, if you integrate much further out than 0 to 0.01 then it will not notice the hump near 1E-7 and will give you a totally inaccurate answer.
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