221210404443 has 12 divisors (see below), whose sum is σ = 365172731248. Its totient is φ = 126405945360.

The previous prime is 221210404439. The next prime is 221210404477. The reversal of 221210404443 is 344404012122.

221210404443 is a `hidden beast` number, since 2 + 2 + 1 + 210 + 4 + 0 + 4 + 443 = 666.

221210404443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221210404443 - 2² = 221210404439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221210404483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1755638068 + ... + 1755638193.

Almost surely, 2^221210404443 is an apocalyptic number.

221210404443 is a deficient number, since it is larger than the sum of its proper divisors (143962326805).

221210404443 is a wasteful number, since it uses less digits than its factorization.

221210404443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3511276274 (or 3511276271 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 221210404443 its reverse (344404012122), we get a palindrome (565614416565).

The spelling of 221210404443 in words is "two hundred twenty-one billion, two hundred ten million, four hundred four thousand, four hundred forty-three".