111200120002000 has 40 divisors (see below), whose sum is σ = 268881890169672. Its totient is φ = 44480048000000.

The previous prime is 111200120001911. The next prime is 111200120002051. The reversal of 111200120002000 is 200021002111.

It can be written as a sum of positive squares in 4 ways, for example, as 77235079744 + 111122884922256 = 277912^2 + 10541484^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (10).

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 7 ways as a sum of consecutive naturals, for example, 27800028001 + ... + 27800032000.

Almost surely, 2^{111200120002000} is an apocalyptic number.

111200120002000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111200120002000 is an abundant number, since it is smaller than the sum of its proper divisors (157681770167672).

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

111200120002000 is an equidigital number, since it uses as much as digits as its factorization.

111200120002000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55600060024 (or 55600060008 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 111200120002000 its reverse (200021002111), we get a palindrome (111400141004111).

The spelling of 111200120002000 in words is "one hundred eleven trillion, two hundred billion, one hundred twenty million, two thousand".