1212221230 has 16 divisors (see below), whose sum is σ = 2380361904. Its totient is φ = 440807680.

The previous prime is 1212221221. The next prime is 1212221243. The reversal of 1212221230 is 321222121.

It is a happy number.

1212221230 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.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5509987 + ... + 5510206.

It is an arithmetic number, because the mean of its divisors is an integer number (148772619).

Almost surely, 2^1212221230 is an apocalyptic number.

1212221230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212221230 is a deficient number, since it is larger than the sum of its proper divisors (1168140674).

1212221230 is a wasteful number, since it uses less digits than its factorization.

1212221230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11020211.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1212221230 is about 34816.9675589360. The cubic root of 1212221230 is about 1066.2538898726.

Adding to 1212221230 its reverse (321222121), we get a palindrome (1533443351).

The spelling of 1212221230 in words is "one billion, two hundred twelve million, two hundred twenty-one thousand, two hundred thirty".