111200019985 has 8 divisors (see below), whose sum is σ = 135267969960. Its totient is φ = 87741385344.

The previous prime is 111200019979. The next prime is 111200020049. The reversal of 111200019985 is 589910002111.

It can be written as a sum of positive squares in 4 ways, for example, as 5829017104 + 105371002881 = 76348^2 + 324609^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111200019985 - 2³ = 111200019977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152328430 + ... + 152329159.

It is an arithmetic number, because the mean of its divisors is an integer number (16908496245).

Almost surely, 2^111200019985 is an apocalyptic number.

It is an amenable number.

111200019985 is a deficient number, since it is larger than the sum of its proper divisors (24067949975).

111200019985 is an equidigital number, since it uses as much as digits as its factorization.

111200019985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304657667.

The product of its (nonzero) digits is 6480, while the sum is 37.

The spelling of 111200019985 in words is "one hundred eleven billion, two hundred million, nineteen thousand, nine hundred eighty-five".