221043404104 has 16 divisors (see below), whose sum is σ = 415128120300. Its totient is φ = 110342572032.

The previous prime is 221043403993. The next prime is 221043404129. The reversal of 221043404104 is 401404340122.

It can be written as a sum of positive squares in 2 ways, for example, as 200705792004 + 20337612100 = 448002^2 + 142610^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22386009 + ... + 22395880.

Almost surely, 2^221043404104 is an apocalyptic number.

It is an amenable number.

221043404104 is a deficient number, since it is larger than the sum of its proper divisors (194084716196).

221043404104 is a wasteful number, since it uses less digits than its factorization.

221043404104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44782512 (or 44782508 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 221043404104 its reverse (401404340122), we get a palindrome (622447744226).

The spelling of 221043404104 in words is "two hundred twenty-one billion, forty-three million, four hundred four thousand, one hundred four".