221222332444 has 6 divisors (see below), whose sum is σ = 387139081784. Its totient is φ = 110611166220.

The previous prime is 221222332351. The next prime is 221222332451. The reversal of 221222332444 is 444233222122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27652791552 + ... + 27652791559.

Almost surely, 2^221222332444 is an apocalyptic number.

It is an amenable number.

221222332444 is a deficient number, since it is larger than the sum of its proper divisors (165916749340).

221222332444 is a wasteful number, since it uses less digits than its factorization.

221222332444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55305583115 (or 55305583113 counting only the distinct ones).

The product of its digits is 36864, while the sum is 31.

Adding to 221222332444 its reverse (444233222122), we get a palindrome (665455554566).

The spelling of 221222332444 in words is "two hundred twenty-one billion, two hundred twenty-two million, three hundred thirty-two thousand, four hundred forty-four".