2001001101011 has 8 divisors (see below), whose sum is σ = 2185734247344. Its totient is φ = 1816738613920.

The previous prime is 2001001100971. The next prime is 2001001101013. The reversal of 2001001101011 is 1101011001002.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001001101011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2001001101011.

It is not an unprimeable number, because it can be changed into a prime (2001001101013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117655916 + ... + 117672921.

It is an arithmetic number, because the mean of its divisors is an integer number (273216780918).

Almost surely, 2^{2001001101011} is an apocalyptic number.

2001001101011 is a deficient number, since it is larger than the sum of its proper divisors (184733146333).

2001001101011 is a wasteful number, since it uses less digits than its factorization.

2001001101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235329621.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 2001001101011 its reverse (1101011001002), we get a palindrome (3102012102013).

It can be divided in two parts, 2001001 and 101011, that added together give a palindrome (2102012).

The spelling of 2001001101011 in words is "two trillion, one billion, one million, one hundred one thousand, eleven".