222221006643 has 12 divisors (see below), whose sum is σ = 300526637384. Its totient is φ = 146060745600.

The previous prime is 222221006611. The next prime is 222221006669. The reversal of 222221006643 is 346600122222.

It is not a de Polignac number, because 222221006643 - 2⁵ = 222221006611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222221006643.

It is not an unprimeable number, because it can be changed into a prime (222221006443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7331998 + ... + 7362243.

Almost surely, 2^222221006643 is an apocalyptic number.

222221006643 is a deficient number, since it is larger than the sum of its proper divisors (78305630741).

222221006643 is an equidigital number, since it uses as much as digits as its factorization.

222221006643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14694386 (or 14694315 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 222221006643 its reverse (346600122222), we get a palindrome (568821128865).

The spelling of 222221006643 in words is "two hundred twenty-two billion, two hundred twenty-one million, six thousand, six hundred forty-three".