111005853012 has 18 divisors (see below), whose sum is σ = 280598128538. Its totient is φ = 37001950992.

The previous prime is 111005853011. The next prime is 111005853017. The reversal of 111005853012 is 210358500111.

111005853012 is a `hidden beast` number, since 1 + 110 + 0 + 5 + 8 + 530 + 12 = 666.

It can be written as a sum of positive squares in only one way, i.e., 106462553796 + 4543299216 = 326286^2 + 67404^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111005853011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1541747923 + ... + 1541747994.

Almost surely, 2^111005853012 is an apocalyptic number.

111005853012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111005853012 is an abundant number, since it is smaller than the sum of its proper divisors (169592275526).

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

111005853012 is a wasteful number, since it uses less digits than its factorization.

111005853012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3083495927 (or 3083495922 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

The spelling of 111005853012 in words is "one hundred eleven billion, five million, eight hundred fifty-three thousand, twelve".