222321888 has 192 divisors, whose sum is σ = 707616000. Its totient is φ = 67640832.

The previous prime is 222321833. The next prime is 222321889. The reversal of 222321888 is 888123222.

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

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222321889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 475831 + ... + 476297.

It is an arithmetic number, because the mean of its divisors is an integer number (3685500).

Almost surely, 2^222321888 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 222321888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (353808000).

222321888 is an abundant number, since it is smaller than the sum of its proper divisors (485294112).

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

222321888 is a wasteful number, since it uses less digits than its factorization.

222321888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534 (or 520 counting only the distinct ones).

The product of its digits is 24576, while the sum is 36.

The square root of 222321888 is about 14910.4623670763. The cubic root of 222321888 is about 605.7974031119.

The spelling of 222321888 in words is "two hundred twenty-two million, three hundred twenty-one thousand, eight hundred eighty-eight".