1221030322240 has 112 divisors (see below), whose sum is σ = 3115995466752. Its totient is φ = 454550317056.

The previous prime is 1221030322229. The next prime is 1221030322271. The reversal of 1221030322240 is 422230301221.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1969584 + ... + 2514223.

It is an arithmetic number, because the mean of its divisors is an integer number (27821388096).

Almost surely, 2^{1221030322240} is an apocalyptic number.

1221030322240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1221030322240 is an abundant number, since it is smaller than the sum of its proper divisors (1894965144512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1221030322240 is a wasteful number, since it uses less digits than its factorization.

1221030322240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4483884 (or 4483874 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 1221030322240 its reverse (422230301221), we get a palindrome (1643260623461).

The spelling of 1221030322240 in words is "one trillion, two hundred twenty-one billion, thirty million, three hundred twenty-two thousand, two hundred forty".