221224333442 has 16 divisors (see below), whose sum is σ = 379461861312. Its totient is φ = 94755391920.

The previous prime is 221224333423. The next prime is 221224333457. The reversal of 221224333442 is 244333422122.

221224333442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221224333399 and 221224333408.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4561409 + ... + 4609652.

It is an arithmetic number, because the mean of its divisors is an integer number (23716366332).

Almost surely, 2^221224333442 is an apocalyptic number.

221224333442 is a deficient number, since it is larger than the sum of its proper divisors (158237527870).

221224333442 is a wasteful number, since it uses less digits than its factorization.

221224333442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9172793.

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

Adding to 221224333442 its reverse (244333422122), we get a palindrome (465557755564).

The spelling of 221224333442 in words is "two hundred twenty-one billion, two hundred twenty-four million, three hundred thirty-three thousand, four hundred forty-two".