1221103030330 has 16 divisors (see below), whose sum is σ = 2228942997504. Its totient is φ = 481561758160.

The previous prime is 1221103030319. The next prime is 1221103030379. The reversal of 1221103030330 is 330303011221.

It is a super-3 number, since 3×1221103030330³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 1221103030298 and 1221103030307.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 859931002 + ... + 859932421.

It is an arithmetic number, because the mean of its divisors is an integer number (139308937344).

Almost surely, 2^{1221103030330} is an apocalyptic number.

1221103030330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221103030330 is a deficient number, since it is larger than the sum of its proper divisors (1007839967174).

1221103030330 is a wasteful number, since it uses less digits than its factorization.

1221103030330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1719863501.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 1221103030330 its reverse (330303011221), we get a palindrome (1551406041551).

The spelling of 1221103030330 in words is "one trillion, two hundred twenty-one billion, one hundred three million, thirty thousand, three hundred thirty".