222223444446 has 32 divisors (see below), whose sum is σ = 451859614848. Its totient is φ = 72839708640.

The previous prime is 222223444411. The next prime is 222223444453. The reversal of 222223444446 is 644444322222.

222223444446 is a nontrivial binomial coefficient, being equal to C(666669, 2).

It is a super-2 number, since 2×222223444446² (a number of 23 digits) contains 22 as substring.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1250005 + ... + 1416671.

It is an arithmetic number, because the mean of its divisors is an integer number (14120612964).

Almost surely, 2^222223444446 is an apocalyptic number.

222223444446 is the 666668-th triangular number.

222223444446 is an abundant number, since it is smaller than the sum of its proper divisors (229636170402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222223444446 is a wasteful number, since it uses less digits than its factorization.

222223444446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170376.

The product of its digits is 589824, while the sum is 39.

Adding to 222223444446 its reverse (644444322222), we get a palindrome (866667766668).

The spelling of 222223444446 in words is "two hundred twenty-two billion, two hundred twenty-three million, four hundred forty-four thousand, four hundred forty-six".