111222220022210 has 48 divisors (see below), whose sum is σ = 220108314533688. Its totient is φ = 40434560474880.

The previous prime is 111222220022183. The next prime is 111222220022297. The reversal of 111222220022210 is 12220022222111.

It can be written as a sum of positive squares in 4 ways, for example, as 101785963743409 + 9436256278801 = 10088903^2 + 3071849^2 .

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 23 ways as a sum of consecutive naturals, for example, 6276299 + ... + 16181358.

Almost surely, 2^{111222220022210} is an apocalyptic number.

111222220022210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111222220022210 is a deficient number, since it is larger than the sum of its proper divisors (108886094511478).

111222220022210 is a wasteful number, since it uses less digits than its factorization.

111222220022210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22461779 (or 22461768 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 111222220022210 its reverse (12220022222111), we get a palindrome (123442242244321).

The spelling of 111222220022210 in words is "one hundred eleven trillion, two hundred twenty-two billion, two hundred twenty million, twenty-two thousand, two hundred ten".