111122011221985 has 8 divisors (see below), whose sum is σ = 133346551035816. Its totient is φ = 88897517264640.

The previous prime is 111122011221971. The next prime is 111122011222009. The reversal of 111122011221985 is 589122110221111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11018124254736 + 100103886967249 = 3319356^2 + 10005193^2 .

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

It is not a de Polignac number, because 111122011221985 - 2⁷ = 111122011221857 is a prime.

It is a Duffinian number.

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, 5886234 + ... + 16027843.

It is an arithmetic number, because the mean of its divisors is an integer number (16668318879477).

Almost surely, 2^{111122011221985} is an apocalyptic number.

It is an amenable number.

111122011221985 is a deficient number, since it is larger than the sum of its proper divisors (22224539813831).

111122011221985 is a wasteful number, since it uses less digits than its factorization.

111122011221985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22928243.

The product of its (nonzero) digits is 5760, while the sum is 37.

The spelling of 111122011221985 in words is "one hundred eleven trillion, one hundred twenty-two billion, eleven million, two hundred twenty-one thousand, nine hundred eighty-five".