222222222222222 has 128 divisors (see below), whose sum is σ = 484454322487296. Its totient is φ = 67794900480000.

The previous prime is 222222222222151. The next prime is 222222222222227.

222222222222222 is nontrivially palindromic in base 10.

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

222222222222222 is a modest number, since divided by 22222222 gives 2222222 as remainder.

222222222222222 is a nontrivial repdigit in base 10.

It is a plaindrome in base 10.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 222222222222222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222222222222227) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 75012822 + ... + 77918982.

It is an arithmetic number, because the mean of its divisors is an integer number (3784799394432).

Almost surely, 2^{222222222222222} is an apocalyptic number.

222222222222222 is an abundant number, since it is smaller than the sum of its proper divisors (262232100265074).

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

222222222222222 is a wasteful number, since it uses less digits than its factorization.

222222222222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2906546.

The product of its digits is 32768, while the sum is 30.

It can be divided in two parts, 22222222222222 and 2, that multiplied together give a palindrome (44444444444444).

The spelling of 222222222222222 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty-two".