201121112011985 has 8 divisors (see below), whose sum is σ = 263285819361216. Its totient is φ = 146269899645040.

The previous prime is 201121112011951. The next prime is 201121112012003. The reversal of 201121112011985 is 589110211121102.

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

It is a de Polignac number, because none of the positive numbers 2^k-201121112011985 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1828373745509 + ... + 1828373745618.

It is an arithmetic number, because the mean of its divisors is an integer number (32910727420152).

Almost surely, 2^{201121112011985} is an apocalyptic number.

It is an amenable number.

201121112011985 is a deficient number, since it is larger than the sum of its proper divisors (62164707349231).

201121112011985 is a wasteful number, since it uses less digits than its factorization.

201121112011985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3656747491143.

The product of its (nonzero) digits is 2880, while the sum is 35.

The spelling of 201121112011985 in words is "two hundred one trillion, one hundred twenty-one billion, one hundred twelve million, eleven thousand, nine hundred eighty-five".