111101010985 has 4 divisors (see below), whose sum is σ = 133321213188. Its totient is φ = 88880808784.

The previous prime is 111101010971. The next prime is 111101011001. The reversal of 111101010985 is 589010101111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11520372889 + 99580638096 = 107333^2 + 315564^2 .

It is a cyclic number.

It is not a de Polignac number, because 111101010985 - 2⁷ = 111101010857 is a prime.

It is a Duffinian number.

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, 11110101094 + ... + 11110101103.

It is an arithmetic number, because the mean of its divisors is an integer number (33330303297).

Almost surely, 2^111101010985 is an apocalyptic number.

It is an amenable number.

111101010985 is a deficient number, since it is larger than the sum of its proper divisors (22220202203).

111101010985 is an equidigital number, since it uses as much as digits as its factorization.

111101010985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22220202202.

The product of its (nonzero) digits is 360, while the sum is 28.

The spelling of 111101010985 in words is "one hundred eleven billion, one hundred one million, ten thousand, nine hundred eighty-five".