2001901010001 has 4 divisors (see below), whose sum is σ = 2669201346672. Its totient is φ = 1334600673332.

The previous prime is 2001901009993. The next prime is 2001901010003. The reversal of 2001901010001 is 1000101091002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2001901010001 - 2³ = 2001901009993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001901010003) 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 3 ways as a sum of consecutive naturals, for example, 333650168331 + ... + 333650168336.

It is an arithmetic number, because the mean of its divisors is an integer number (667300336668).

Almost surely, 2^{2001901010001} is an apocalyptic number.

It is an amenable number.

2001901010001 is a deficient number, since it is larger than the sum of its proper divisors (667300336671).

2001901010001 is an equidigital number, since it uses as much as digits as its factorization.

2001901010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667300336670.

The product of its (nonzero) digits is 18, while the sum is 15.

The spelling of 2001901010001 in words is "two trillion, one billion, nine hundred one million, ten thousand, one".