221001013321108 has 48 divisors (see below), whose sum is σ = 419492708493264. Its totient is φ = 101463159029760.

The previous prime is 221001013321087. The next prime is 221001013321111. The reversal of 221001013321108 is 801123310100122.

It can be written as a sum of positive squares in 8 ways, for example, as 34672288869124 + 186328724451984 = 5888318^2 + 13650228^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 773797660 + ... + 774083212.

It is an arithmetic number, because the mean of its divisors is an integer number (8739431426943).

Almost surely, 2^{221001013321108} is an apocalyptic number.

It is an amenable number.

221001013321108 is a deficient number, since it is larger than the sum of its proper divisors (198491695172156).

221001013321108 is a wasteful number, since it uses less digits than its factorization.

221001013321108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563212 (or 563210 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 221001013321108 in words is "two hundred twenty-one trillion, one billion, thirteen million, three hundred twenty-one thousand, one hundred eight".