222318522720 has 1536 divisors, whose sum is σ = 1006948454400. Its totient is φ = 45148078080.

The previous prime is 222318522689. The next prime is 222318522731. The reversal of 222318522720 is 27225813222.

222318522720 is a `hidden beast` number, since 2 + 22 + 318 + 52 + 272 + 0 = 666.

222318522720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 791168980 + ... + 791169260.

It is an arithmetic number, because the mean of its divisors is an integer number (655565400).

Almost surely, 2^222318522720 is an apocalyptic number.

222318522720 is a gapful number since it is divisible by the number (20) 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 222318522720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (503474227200).

222318522720 is an abundant number, since it is smaller than the sum of its proper divisors (784629931680).

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

222318522720 is a wasteful number, since it uses less digits than its factorization.

222318522720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360 (or 334 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The spelling of 222318522720 in words is "two hundred twenty-two billion, three hundred eighteen million, five hundred twenty-two thousand, seven hundred twenty".