222666666444 has 96 divisors (see below), whose sum is σ = 596438223360. Its totient is φ = 71783568576.

The previous prime is 222666666413. The next prime is 222666666463. The reversal of 222666666444 is 444666666222.

It is a Harshad number since it is a multiple of its sum of digits (54).

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

It is a zygodrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 500499 + ... + 834165.

It is an arithmetic number, because the mean of its divisors is an integer number (6212898160).

Almost surely, 2^222666666444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222666666444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298219111680).

222666666444 is an abundant number, since it is smaller than the sum of its proper divisors (373771556916).

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

222666666444 is a wasteful number, since it uses less digits than its factorization.

222666666444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333884 (or 333876 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 54.

It can be divided in two parts, 222 and 666666444, that added together give a palindrome (666666666).

The spelling of 222666666444 in words is "two hundred twenty-two billion, six hundred sixty-six million, six hundred sixty-six thousand, four hundred forty-four".