1221112321330 has 32 divisors (see below), whose sum is σ = 2397886400448. Its totient is φ = 444028651200.

The previous prime is 1221112321327. The next prime is 1221112321349. The reversal of 1221112321330 is 331232111221.

It is a super-2 number, since 2×1221112321330² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4519860 + ... + 4782400.

It is an arithmetic number, because the mean of its divisors is an integer number (74933950014).

Almost surely, 2^{1221112321330} is an apocalyptic number.

1221112321330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221112321330 is a deficient number, since it is larger than the sum of its proper divisors (1176774079118).

1221112321330 is a wasteful number, since it uses less digits than its factorization.

1221112321330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304842.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1221112321330 its reverse (331232111221), we get a palindrome (1552344432551).

The spelling of 1221112321330 in words is "one trillion, two hundred twenty-one billion, one hundred twelve million, three hundred twenty-one thousand, three hundred thirty".