221244412244 has 12 divisors (see below), whose sum is σ = 399667325568. Its totient is φ = 107053747800.

The previous prime is 221244412243. The next prime is 221244412273. The reversal of 221244412244 is 442214442122.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 221244412244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221244412243) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 892114442 + ... + 892114689.

It is an arithmetic number, because the mean of its divisors is an integer number (33305610464).

Almost surely, 2^221244412244 is an apocalyptic number.

It is an amenable number.

221244412244 is a deficient number, since it is larger than the sum of its proper divisors (178422913324).

221244412244 is a wasteful number, since it uses less digits than its factorization.

221244412244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784229166 (or 1784229164 counting only the distinct ones).

The product of its digits is 32768, while the sum is 32.

Adding to 221244412244 its reverse (442214442122), we get a palindrome (663458854366).

The spelling of 221244412244 in words is "two hundred twenty-one billion, two hundred forty-four million, four hundred twelve thousand, two hundred forty-four".