201120002001 has 32 divisors (see below), whose sum is σ = 317966561280. Its totient is φ = 125199260928.

The previous prime is 201120001913. The next prime is 201120002011. The reversal of 201120002001 is 100200021102.

It is not a de Polignac number, because 201120002001 - 2²⁶ = 201052893137 is a prime.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201120002011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1666786 + ... + 1783371.

It is an arithmetic number, because the mean of its divisors is an integer number (9936455040).

Almost surely, 2^201120002001 is an apocalyptic number.

It is an amenable number.

201120002001 is a deficient number, since it is larger than the sum of its proper divisors (116846559279).

201120002001 is a wasteful number, since it uses less digits than its factorization.

201120002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3450310 (or 3450304 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 201120002001 its reverse (100200021102), we get a palindrome (301320023103).

The spelling of 201120002001 in words is "two hundred one billion, one hundred twenty million, two thousand, one".