222444222 has 216 divisors, whose sum is σ = 632619288. Its totient is φ = 51891840.

The previous prime is 222444217. The next prime is 222444223.

222444222 is nontrivially palindromic in base 10.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 222444192 and 222444201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222444223) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 6011988 + ... + 6012024.

It is an arithmetic number, because the mean of its divisors is an integer number (2928793).

Almost surely, 2^222444222 is an apocalyptic number.

222444222 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 222444222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316309644).

222444222 is an abundant number, since it is smaller than the sum of its proper divisors (410175066).

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

222444222 is a wasteful number, since it uses less digits than its factorization.

222444222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104 (or 73 counting only the distinct ones).

The product of its digits is 4096, while the sum is 24.

The square root of 222444222 is about 14914.5640901771. The cubic root of 222444222 is about 605.9084973324.

It can be divided in two parts, 222 and 444222, that added together give a palindrome (444444).

The spelling of 222444222 in words is "two hundred twenty-two million, four hundred forty-four thousand, two hundred twenty-two".