201110000121 has 16 divisors (see below), whose sum is σ = 304869597120. Its totient is φ = 130955348160.

The previous prime is 201110000101. The next prime is 201110000159. The reversal of 201110000121 is 121000011102.

It is a happy number.

It is not a de Polignac number, because 201110000121 - 2⁵ = 201110000089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (201110000101) 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, 86609520 + ... + 86611841.

It is an arithmetic number, because the mean of its divisors is an integer number (19054349820).

Almost surely, 2^201110000121 is an apocalyptic number.

It is an amenable number.

201110000121 is a deficient number, since it is larger than the sum of its proper divisors (103759596999).

201110000121 is a wasteful number, since it uses less digits than its factorization.

201110000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173221413 (or 173221407 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 201110000121 its reverse (121000011102), we get a palindrome (322110011223).

The spelling of 201110000121 in words is "two hundred one billion, one hundred ten million, one hundred twenty-one", and thus it is an aban number.