111120111120020 has 24 divisors (see below), whose sum is σ = 233353704966984. Its totient is φ = 44447764140416.

The previous prime is 111120111119959. The next prime is 111120111120037. The reversal of 111120111120020 is 20021111021111.

It can be written as a sum of positive squares in 4 ways, for example, as 28561734885124 + 82558376234896 = 5344318^2 + 9086164^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111120111119977 and 111120111120004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14253719 + ... + 20625438.

It is an arithmetic number, because the mean of its divisors is an integer number (9723071040291).

Almost surely, 2^{111120111120020} is an apocalyptic number.

111120111120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111120111120020 is an abundant number, since it is smaller than the sum of its proper divisors (122233593846964).

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

111120111120020 is a wasteful number, since it uses less digits than its factorization.

111120111120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35038459 (or 35038457 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111120111120020 its reverse (20021111021111), we get a palindrome (131141222141131).

The spelling of 111120111120020 in words is "one hundred eleven trillion, one hundred twenty billion, one hundred eleven million, one hundred twenty thousand, twenty".