222222397824 has 576 divisors, whose sum is σ = 772139665440. Its totient is φ = 61117120512.

The previous prime is 222222397823. The next prime is 222222397841. The reversal of 222222397824 is 428793222222.

It is a tau number, because it is divible by the number of its divisors (576).

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

It is a self number, because there is not a number n which added to its sum of digits gives 222222397824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222222397823) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 215122812 + ... + 215123844.

Almost surely, 2^222222397824 is an apocalyptic number.

222222397824 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222222397824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386069832720).

222222397824 is an abundant number, since it is smaller than the sum of its proper divisors (549917267616).

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

222222397824 is a wasteful number, since it uses less digits than its factorization.

222222397824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207 (or 1185 counting only the distinct ones).

The product of its digits is 774144, while the sum is 45.

The spelling of 222222397824 in words is "two hundred twenty-two billion, two hundred twenty-two million, three hundred ninety-seven thousand, eight hundred twenty-four".