Adding to 103021 its reverse (120301), we get a palindrome (223322).
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120301 = 59 ⋅2039.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-103021 is a prime.
It is a Duffinian number.
103021 is a lucky number.
It is a congruent number.
2103021 is an apocalyptic number.
It is an amenable number.
103021 is an equidigital number, since it uses as much as digits as its factorization.
103021 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1522.
The square root of 103021 is about 320.9688458402. The cubic root of 103021 is about 46.8786669724.
The spelling of 103021 in words is "one hundred three thousand, twenty-one", and thus it is an iban number.