111111200000010 has 128 divisors (see below), whose sum is σ = 338654149516800. Its totient is φ = 25394630215680.

The previous prime is 111111199999913. The next prime is 111111200000023. The reversal of 111111200000010 is 10000002111111.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111111199999938 and 111111200000001.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19155720 + ... + 24272700.

It is an arithmetic number, because the mean of its divisors is an integer number (2645735543100).

Almost surely, 2^{111111200000010} is an apocalyptic number.

111111200000010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111111200000010 is an abundant number, since it is smaller than the sum of its proper divisors (227542949516790).

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

111111200000010 is a wasteful number, since it uses less digits than its factorization.

111111200000010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5128493 (or 5128487 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 111111200000010 its reverse (10000002111111), we get a palindrome (121111202111121).

The spelling of 111111200000010 in words is "one hundred eleven trillion, one hundred eleven billion, two hundred million, ten", and thus it is an aban number.