2001201001 has 12 divisors (see below), whose sum is σ = 2076501504. Its totient is φ = 1926622800.

The previous prime is 2001200989. The next prime is 2001201017. The reversal of 2001201001 is 1001021002.

It is not a de Polignac number, because 2001201001 - 2⁵ = 2001200969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001201031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1625056 + ... + 1626286.

It is an arithmetic number, because the mean of its divisors is an integer number (173041792).

Almost surely, 2^2001201001 is an apocalyptic number.

It is an amenable number.

2001201001 is a deficient number, since it is larger than the sum of its proper divisors (75300503).

2001201001 is an equidigital number, since it uses as much as digits as its factorization.

2001201001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720 (or 1491 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 2001201001 is about 44734.7851341660. The cubic root of 2001201001 is about 1260.1731938376.

Adding to 2001201001 its reverse (1001021002), we get a palindrome (3002222003).

The spelling of 2001201001 in words is "two billion, one million, two hundred one thousand, one".