2001110111111 has 8 divisors (see below), whose sum is σ = 2003077345440. Its totient is φ = 1999143522432.

The previous prime is 2001110111107. The next prime is 2001110111141. The reversal of 2001110111111 is 1111110111002.

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 not a de Polignac number, because 2001110111111 - 2² = 2001110111107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001110111092 and 2001110111101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001110111141) 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, 6161651 + ... + 6478283.

It is an arithmetic number, because the mean of its divisors is an integer number (250384668180).

Almost surely, 2^{2001110111111} is an apocalyptic number.

2001110111111 is a deficient number, since it is larger than the sum of its proper divisors (1967234329).

2001110111111 is a wasteful number, since it uses less digits than its factorization.

2001110111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322825.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 2001110111111 its reverse (1111110111002), we get a palindrome (3112220222113).

The spelling of 2001110111111 in words is "two trillion, one billion, one hundred ten million, one hundred eleven thousand, one hundred eleven".