2001133001 has 8 divisors (see below), whose sum is σ = 2333683200. Its totient is φ = 1715256564.

The previous prime is 2001132997. The next prime is 2001133003. The reversal of 2001133001 is 1003311002.

It is not a de Polignac number, because 2001133001 - 2² = 2001132997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001133003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2916761 + ... + 2917446.

It is an arithmetic number, because the mean of its divisors is an integer number (291710400).

Almost surely, 2^2001133001 is an apocalyptic number.

It is an amenable number.

2001133001 is a deficient number, since it is larger than the sum of its proper divisors (332550199).

2001133001 is an frugal number, since it uses more digits than its factorization.

2001133001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5834228 (or 5834214 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 2001133001 is about 44734.0250927636. The cubic root of 2001133001 is about 1260.1589202842.

Adding to 2001133001 its reverse (1003311002), we get a palindrome (3004444003).

The spelling of 2001133001 in words is "two billion, one million, one hundred thirty-three thousand, one".