2001201013 has 6 divisors (see below), whose sum is σ = 2327927766. Its totient is φ = 1715315112.

The previous prime is 2001200989. The next prime is 2001201017. The reversal of 2001201013 is 3101021002.

It can be written as a sum of positive squares in only one way, i.e., 1987643889 + 13557124 = 44583^2 + 3682^2 .

It is not a de Polignac number, because 2001201013 - 2²¹ = 1999103861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001201017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20420370 + ... + 20420467.

It is an arithmetic number, because the mean of its divisors is an integer number (387987961).

Almost surely, 2^2001201013 is an apocalyptic number.

It is an amenable number.

2001201013 is a deficient number, since it is larger than the sum of its proper divisors (326726753).

2001201013 is an equidigital number, since it uses as much as digits as its factorization.

2001201013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40840851 (or 40840844 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 2001201013 is about 44734.7852682898. The cubic root of 2001201013 is about 1260.1731963564.

Adding to 2001201013 its reverse (3101021002), we get a palindrome (5102222015).

The spelling of 2001201013 in words is "two billion, one million, two hundred one thousand, thirteen".