222122232222 has 128 divisors (see below), whose sum is σ = 508061445120. Its totient is φ = 64122240000.

The previous prime is 222122232191. The next prime is 222122232239. The reversal of 222122232222 is 222232221222.

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 = 222122232192 and 222122232201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 60505447 + ... + 60509117.

It is an arithmetic number, because the mean of its divisors is an integer number (3969230040).

Almost surely, 2^222122232222 is an apocalyptic number.

222122232222 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 222122232222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254030722560).

222122232222 is an abundant number, since it is smaller than the sum of its proper divisors (285939212898).

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

222122232222 is a wasteful number, since it uses less digits than its factorization.

222122232222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4130.

The product of its digits is 3072, while the sum is 24.

Adding to 222122232222 its reverse (222232221222), we get a palindrome (444354453444).

It can be divided in two parts, 22212223 and 2222, that added together give a triangular number (22214445 = T₆₆₆₅).

The spelling of 222122232222 in words is "two hundred twenty-two billion, one hundred twenty-two million, two hundred thirty-two thousand, two hundred twenty-two".