2001232001 has 16 divisors (see below), whose sum is σ = 2185190400. Its totient is φ = 1827048960.

The previous prime is 2001231989. The next prime is 2001232069. The reversal of 2001232001 is 1002321002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2001232001 - 2⁶ = 2001231937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001202001) 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, 32825 + ... + 71273.

It is an arithmetic number, because the mean of its divisors is an integer number (136574400).

Almost surely, 2^2001232001 is an apocalyptic number.

It is an amenable number.

2001232001 is a deficient number, since it is larger than the sum of its proper divisors (183958399).

2001232001 is a wasteful number, since it uses less digits than its factorization.

2001232001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38576.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 2001232001 is about 44735.1316193436. The cubic root of 2001232001 is about 1260.1797007913.

Adding to 2001232001 its reverse (1002321002), we get a palindrome (3003553003).

The spelling of 2001232001 in words is "two billion, one million, two hundred thirty-two thousand, one".