2001101101999 has 4 divisors (see below), whose sum is σ = 2028513445936. Its totient is φ = 1973688758064.

The previous prime is 2001101101949. The next prime is 2001101102081. The reversal of 2001101101999 is 9991011011002.

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 2001101101999 - 2²⁷ = 2000966884271 is a prime.

It is a super-2 number, since 2×2001101101999² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001101101939) 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, 13706171859 + ... + 13706172004.

It is an arithmetic number, because the mean of its divisors is an integer number (507128361484).

Almost surely, 2^{2001101101999} is an apocalyptic number.

2001101101999 is a deficient number, since it is larger than the sum of its proper divisors (27412343937).

2001101101999 is an equidigital number, since it uses as much as digits as its factorization.

2001101101999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27412343936.

The product of its (nonzero) digits is 1458, while the sum is 34.

The spelling of 2001101101999 in words is "two trillion, one billion, one hundred one million, one hundred one thousand, nine hundred ninety-nine".