1221113330 has 8 divisors (see below), whose sum is σ = 2198004012. Its totient is φ = 488445328.

The previous prime is 1221113329. The next prime is 1221113339. The reversal of 1221113330 is 333111221.

It can be written as a sum of positive squares in 2 ways, for example, as 1004699809 + 216413521 = 31697^2 + 14711^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1221113330² = 2982235529407377800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1221113299 and 1221113308.

It is not an unprimeable number, because it can be changed into a prime (1221113339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61055657 + ... + 61055676.

Almost surely, 2^1221113330 is an apocalyptic number.

1221113330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221113330 is a deficient number, since it is larger than the sum of its proper divisors (976890682).

1221113330 is a wasteful number, since it uses less digits than its factorization.

1221113330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122111340.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1221113330 is about 34944.4320314410. The cubic root of 1221113330 is about 1068.8546658093.

Adding to 1221113330 its reverse (333111221), we get a palindrome (1554224551).

The spelling of 1221113330 in words is "one billion, two hundred twenty-one million, one hundred thirteen thousand, three hundred thirty".