221233304444 has 24 divisors (see below), whose sum is σ = 402823683360. Its totient is φ = 106184921024.

The previous prime is 221233304419. The next prime is 221233304459. The reversal of 221233304444 is 444403332122.

It is a self number, because there is not a number n which added to its sum of digits gives 221233304444.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5492024 + ... + 5532159.

It is an arithmetic number, because the mean of its divisors is an integer number (16784320140).

Almost surely, 2^221233304444 is an apocalyptic number.

It is an amenable number.

221233304444 is a deficient number, since it is larger than the sum of its proper divisors (181590378916).

221233304444 is a wasteful number, since it uses less digits than its factorization.

221233304444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11024389 (or 11024387 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 221233304444 its reverse (444403332122), we get a palindrome (665636636566).

The spelling of 221233304444 in words is "two hundred twenty-one billion, two hundred thirty-three million, three hundred four thousand, four hundred forty-four".