111111122222222 has 8 divisors (see below), whose sum is σ = 166848039901200. Its totient is φ = 55495108921824.

The previous prime is 111111122222197. The next prime is 111111122222263. The reversal of 111111122222222 is 222222221111111.

It is a sphenic number, since it is the product of 3 distinct primes.

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

It is a plaindrome in base 10.

It is a zygodrome in base 10.

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 3 ways as a sum of consecutive naturals, for example, 30226092347 + ... + 30226096022.

It is an arithmetic number, because the mean of its divisors is an integer number (20856004987650).

Almost surely, 2^{111111122222222} is an apocalyptic number.

111111122222222 is a deficient number, since it is larger than the sum of its proper divisors (55736917678978).

111111122222222 is an equidigital number, since it uses as much as digits as its factorization.

111111122222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60452189290.

The product of its digits is 256, while the sum is 23.

Adding to 111111122222222 its reverse (222222221111111), we get a palindrome (333333343333333).

The spelling of 111111122222222 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty-two".