Context: International student from India, mid-tier income [<70K]
Considering I have a near-perfect academic record only 1 B, 75th percentile ACT  and most rigorous course load possible at my school
Are my extracurriculars competitive? Not asking for chancing, just want to know if these are suitable for consideration.
NSTEM Tech, Publications and Marketing Intern 9,10,11: 20h/week
Kode with Klossy Summer Program 10: 4-5 h/week
Writing: published in a T20 literary journal, and 10 other international ones
Model UN lead mentor for 300+ students, chaired multiple conferences, all grades, 6h/week
I’m aiming for MathCamp/suMAc/other prestigious math program
Tutoring math and CS to HS students 3h/week
Paid internship with reputed company , IT-based sophomore year 8h/week
Founder of a nonprofit STEM-oriented org, 2K+ audience and 200+ operation team
8 online MOOCs in CS, math, creative writing
App on Play Store with 1K+ audience
Awards too, for reference: I’m aiming for an international olympiad recognition math/CS, prepping for a long time so hope for something at least. Global SDGs Challenge Winner , huge writing award , a few state math olympiad medals, top-ranked in several national examinations in math and science.
Also, proficient in four programming languages, active GitHub profile and contribution to open-source projects.
A little more academic context: upto multivariable calc reached [although not offered at school], 5’s on 6 AP tests