2001211120011 has 8 divisors (see below), whose sum is σ = 2668306936464. Its totient is φ = 1334128025120.

The previous prime is 2001211120003. The next prime is 2001211120039. The reversal of 2001211120011 is 1100211121002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2001211120011 - 2³ = 2001211120003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001211120211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2807076 + ... + 3447041.

It is an arithmetic number, because the mean of its divisors is an integer number (333538367058).

Almost surely, 2^{2001211120011} is an apocalyptic number.

2001211120011 is a deficient number, since it is larger than the sum of its proper divisors (667095816453).

2001211120011 is a wasteful number, since it uses less digits than its factorization.

2001211120011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6360781.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2001211120011 its reverse (1100211121002), we get a palindrome (3101422241013).

Subtracting from 2001211120011 its reverse (1100211121002), we obtain a palindrome (900999999009).

The spelling of 2001211120011 in words is "two trillion, one billion, two hundred eleven million, one hundred twenty thousand, eleven".