111221122220 has 48 divisors (see below), whose sum is σ = 256276742400. Its totient is φ = 40291420416.

The previous prime is 111221122193. The next prime is 111221122237. The reversal of 111221122220 is 22221122111.

111221122220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4021820 + ... + 4049379.

It is an arithmetic number, because the mean of its divisors is an integer number (5339098800).

Almost surely, 2^111221122220 is an apocalyptic number.

111221122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111221122220 is an abundant number, since it is smaller than the sum of its proper divisors (145055620180).

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

111221122220 is a wasteful number, since it uses less digits than its factorization.

111221122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8071274 (or 8071272 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 111221122220 its reverse (22221122111), we get a palindrome (133442244331).

The spelling of 111221122220 in words is "one hundred eleven billion, two hundred twenty-one million, one hundred twenty-two thousand, two hundred twenty".