2001011201 has 32 divisors (see below), whose sum is σ = 2527580160. Its totient is φ = 1544533056.

The previous prime is 2001011161. The next prime is 2001011203. The reversal of 2001011201 is 1021101002.

It is a cyclic number.

It is not a de Polignac number, because 2001011201 - 2³⁰ = 927269377 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2001011203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 508895 + ... + 512811.

It is an arithmetic number, because the mean of its divisors is an integer number (78986880).

Almost surely, 2^2001011201 is an apocalyptic number.

It is an amenable number.

2001011201 is a deficient number, since it is larger than the sum of its proper divisors (526568959).

2001011201 is a wasteful number, since it uses less digits than its factorization.

2001011201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4133.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 2001011201 is about 44732.6636922059. The cubic root of 2001011201 is about 1260.1333530230.

Adding to 2001011201 its reverse (1021101002), we get a palindrome (3022112203).

The spelling of 2001011201 in words is "two billion, one million, eleven thousand, two hundred one".