221322243404 has 6 divisors (see below), whose sum is σ = 387313925964. Its totient is φ = 110661121700.

The previous prime is 221322243397. The next prime is 221322243419. The reversal of 221322243404 is 404342223122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27665280422 + ... + 27665280429.

It is an arithmetic number, because the mean of its divisors is an integer number (64552320994).

Almost surely, 2^221322243404 is an apocalyptic number.

It is an amenable number.

221322243404 is a deficient number, since it is larger than the sum of its proper divisors (165991682560).

221322243404 is a wasteful number, since it uses less digits than its factorization.

221322243404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55330560855 (or 55330560853 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 221322243404 its reverse (404342223122), we get a palindrome (625664466526).

The spelling of 221322243404 in words is "two hundred twenty-one billion, three hundred twenty-two million, two hundred forty-three thousand, four hundred four".