222123321222 has 128 divisors (see below), whose sum is σ = 506014138368. Its totient is φ = 64405756800.

The previous prime is 222123321193. The next prime is 222123321229.

222123321222 is nontrivially palindromic in base 10.

222123321222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 222123321192 and 222123321201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222123321229) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 80274483 + ... + 80277249.

It is an arithmetic number, because the mean of its divisors is an integer number (3953235456).

Almost surely, 2^222123321222 is an apocalyptic number.

222123321222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 222123321222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253007069184).

222123321222 is an abundant number, since it is smaller than the sum of its proper divisors (283890817146).

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

222123321222 is a wasteful number, since it uses less digits than its factorization.

222123321222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3354.

The product of its digits is 2304, while the sum is 24.

It can be divided in two parts, 222123 and 321222, that added together give a palindrome (543345).

The spelling of 222123321222 in words is "two hundred twenty-two billion, one hundred twenty-three million, three hundred twenty-one thousand, two hundred twenty-two".