201111121221168 has 80 divisors (see below), whose sum is σ = 520316825198976. Its totient is φ = 66936433175040.

The previous prime is 201111121221089. The next prime is 201111121221169. The reversal of 201111121221168 is 861122121111102.

201111121221168 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (201111121221169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1039844571 + ... + 1040037957.

Almost surely, 2^{201111121221168} is an apocalyptic number.

It is an amenable number.

201111121221168 is an abundant number, since it is smaller than the sum of its proper divisors (319205703977808).

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

201111121221168 is a wasteful number, since it uses less digits than its factorization.

201111121221168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225802 (or 225796 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 30.

The spelling of 201111121221168 in words is "two hundred one trillion, one hundred eleven billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred sixty-eight".