111122201112220 has 48 divisors (see below), whose sum is σ = 235817424013248. Its totient is φ = 43982505815040.

The previous prime is 111122201112161. The next prime is 111122201112239. The reversal of 111122201112220 is 22211102221111.

It is a happy number.

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, 72664912 + ... + 74178391.

It is an arithmetic number, because the mean of its divisors is an integer number (4912863000276).

Almost surely, 2^{111122201112220} is an apocalyptic number.

111122201112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111122201112220 is an abundant number, since it is smaller than the sum of its proper divisors (124695222901028).

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

111122201112220 is a wasteful number, since it uses less digits than its factorization.

111122201112220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146843710 (or 146843708 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 111122201112220 its reverse (22211102221111), we get a palindrome (133333303333331).

The spelling of 111122201112220 in words is "one hundred eleven trillion, one hundred twenty-two billion, two hundred one million, one hundred twelve thousand, two hundred twenty".