111120122111220 has 72 divisors (see below), whose sum is σ = 344235952779264. Its totient is φ = 29001563782848.

The previous prime is 111120122111213. The next prime is 111120122111249. The reversal of 111120122111220 is 22111221021111.

It is a happy number.

111120122111220 is a `hidden beast` number, since 1 + 1 + 11 + 201 + 221 + 11 + 220 = 666.

111120122111220 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 = 111120122111193 and 111120122111202.

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 23 ways as a sum of consecutive naturals, for example, 6567374644 + ... + 6567391563.

It is an arithmetic number, because the mean of its divisors is an integer number (4781054899712).

Almost surely, 2^{111120122111220} is an apocalyptic number.

111120122111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111120122111220 is an abundant number, since it is smaller than the sum of its proper divisors (233115830668044).

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

111120122111220 is a wasteful number, since it uses less digits than its factorization.

111120122111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13134766269 (or 13134766264 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111120122111220 its reverse (22111221021111), we get a palindrome (133231343132331).

The spelling of 111120122111220 in words is "one hundred eleven trillion, one hundred twenty billion, one hundred twenty-two million, one hundred eleven thousand, two hundred twenty".