111021100111120 has 20 divisors (see below), whose sum is σ = 258124057758540. Its totient is φ = 44408440044416.

The previous prime is 111021100111093. The next prime is 111021100111217. The reversal of 111021100111120 is 21111001120111.

It can be written as a sum of positive squares in 2 ways, for example, as 43968781762816 + 67052318348304 = 6630896^2 + 8188548^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 111021100111120.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 693881875615 + ... + 693881875774.

It is an arithmetic number, because the mean of its divisors is an integer number (12906202887927).

Almost surely, 2^{111021100111120} is an apocalyptic number.

111021100111120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111021100111120 is an abundant number, since it is smaller than the sum of its proper divisors (147102957647420).

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

111021100111120 is a wasteful number, since it uses less digits than its factorization.

111021100111120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387763751402 (or 1387763751396 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 111021100111120 its reverse (21111001120111), we get a palindrome (132132101231231).

The spelling of 111021100111120 in words is "one hundred eleven trillion, twenty-one billion, one hundred million, one hundred eleven thousand, one hundred twenty".