1221031230 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.
It is a congruent number.
It is an unprimeable number.
Almost surely, 21221031230 is an apocalyptic number.
1221031230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1221031230 is a wasteful number, since it uses less digits than its factorization.
1221031230 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 78652.
The square root of 1221031230 is about 34943.2572894972. The cubic root of 1221031230 is about 1068.8307109116.
Adding to 1221031230 its reverse (321301221), we get a palindrome (1542332451).
The spelling of 1221031230 in words is "one billion, two hundred twenty-one million, thirty-one thousand, two hundred thirty".