It is a sphenic number, since it is the product of 3 distinct primes.
It is a Duffinian number.
It is a congruent number.
It is an unprimeable number.
Almost surely, 230121255 is an apocalyptic number.
30121255 is a wasteful number, since it uses less digits than its factorization.
30121255 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 24257.
The square root of 30121255 is about 5488.2834292700. The cubic root of 30121255 is about 311.1413183774.
Adding to 30121255 its reverse (55212103), we get a palindrome (85333358).
The spelling of 30121255 in words is "thirty million, one hundred twenty-one thousand, two hundred fifty-five".