2001109999999 has 4 divisors (see below), whose sum is σ = 2183029090920. Its totient is φ = 1819190909080.

The previous prime is 2001109999949. The next prime is 2001110000039. The reversal of 2001109999999 is 9999999011002.

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

It is a cyclic number.

It is not a de Polignac number, because 2001109999999 - 2¹³ = 2001109991807 is a prime.

It is a Duffinian number.

2001109999999 is a modest number, since divided by 9999999 gives 200110 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001109999909) 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, 90959545444 + ... + 90959545465.

It is an arithmetic number, because the mean of its divisors is an integer number (545757272730).

Almost surely, 2^{2001109999999} is an apocalyptic number.

2001109999999 is a deficient number, since it is larger than the sum of its proper divisors (181919090921).

2001109999999 is a wasteful number, since it uses less digits than its factorization.

2001109999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181919090920.

The product of its (nonzero) digits is 9565938, while the sum is 67.

The spelling of 2001109999999 in words is "two trillion, one billion, one hundred nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".