221120220100004 has 24 divisors (see below), whose sum is σ = 387646387904160. Its totient is φ = 110364115219136.

The previous prime is 221120220099983. The next prime is 221120220100019. The reversal of 221120220100004 is 400001022021122.

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 7 ways as a sum of consecutive naturals, for example, 155212859 + ... + 156631005.

It is an arithmetic number, because the mean of its divisors is an integer number (16151932829340).

Almost surely, 2^{221120220100004} is an apocalyptic number.

It is an amenable number.

221120220100004 is a deficient number, since it is larger than the sum of its proper divisors (166526167804156).

221120220100004 is a wasteful number, since it uses less digits than its factorization.

221120220100004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1487227 (or 1487225 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221120220100004 its reverse (400001022021122), we get a palindrome (621121242121126).

The spelling of 221120220100004 in words is "two hundred twenty-one trillion, one hundred twenty billion, two hundred twenty million, one hundred thousand, four".