222221122222 has 32 divisors (see below), whose sum is σ = 395972323200.
Its totient is φ = 92393532000.
The previous prime is 222221122213. The next prime is 222221122247.
Multipling 222221122222 by its sum of digits (22), we get a palindrome (4888864688884).
It can be divided in two parts, 222221 and 122222, that added together give a palindrome (344443).
222221122222 is nontrivially palindromic in base 10.
It is a Harshad number since it is a multiple of its sum of digits (22).
It is a nude number because it is divisible by every one of its digits.
It is a zygodrome in base 10.
It is a junction number, because it is equal to n+sod(n) for n = 222221122193 and 222221122202.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9153904 + ... + 9178147.
It is an arithmetic number, because the mean of its divisors is an integer number (12374135100).
Almost surely, 2222221122222 is an apocalyptic number.
222221122222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.
222221122222 is a deficient number, since it is larger than the sum of its proper divisors (173751200978).
222221122222 is a wasteful number, since it uses less digits than its factorization.
222221122222 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 18332112.
The product of its digits is 1024, while the sum is 22.
The spelling of 222221122222 in words is "two hundred twenty-two billion, two hundred twenty-one million, one hundred twenty-two thousand, two hundred twenty-two".