2001131020011 has 4 divisors (see below), whose sum is σ = 2668174693352. Its totient is φ = 1334087346672.

The previous prime is 2001131020001. The next prime is 2001131020013. The reversal of 2001131020011 is 1100201311002.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2001131020011 - 2¹⁹ = 2001130495723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001131020013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333521836666 + ... + 333521836671.

It is an arithmetic number, because the mean of its divisors is an integer number (667043673338).

Almost surely, 2^{2001131020011} is an apocalyptic number.

2001131020011 is a deficient number, since it is larger than the sum of its proper divisors (667043673341).

2001131020011 is an equidigital number, since it uses as much as digits as its factorization.

2001131020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667043673340.

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

Adding to 2001131020011 its reverse (1100201311002), we get a palindrome (3101332331013).

The spelling of 2001131020011 in words is "two trillion, one billion, one hundred thirty-one million, twenty thousand, eleven".