111222200120220 has 432 divisors, whose sum is σ = 399914360733888. Its totient is φ = 24939180564480.

The previous prime is 111222200120191. The next prime is 111222200120257. The reversal of 111222200120220 is 22021002222111.

It is a happy number.

111222200120220 is a `hidden beast` number, since 1 + 1 + 1 + 222 + 200 + 1 + 20 + 220 = 666.

111222200120220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 111222200120193 and 111222200120202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5388401100 + ... + 5388421740.

It is an arithmetic number, because the mean of its divisors is an integer number (925727686884).

Almost surely, 2^{111222200120220} is an apocalyptic number.

111222200120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111222200120220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199957180366944).

111222200120220 is an abundant number, since it is smaller than the sum of its proper divisors (288692160613668).

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

111222200120220 is a wasteful number, since it uses less digits than its factorization.

111222200120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32250 (or 32238 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 111222200120220 its reverse (22021002222111), we get a palindrome (133243202342331).

The spelling of 111222200120220 in words is "one hundred eleven trillion, two hundred twenty-two billion, two hundred million, one hundred twenty thousand, two hundred twenty".