2001112011 has 6 divisors (see below), whose sum is σ = 2890495140. Its totient is φ = 1334074668.

The previous prime is 2001111991. The next prime is 2001112039. The reversal of 2001112011 is 1102111002.

It is a happy number.

It is not a de Polignac number, because 2001112011 - 2¹⁷ = 2000980939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 222345779 = 2001112011 / (2 + 0 + 0 + 1 + 1 + 1 + 2 + 0 + 1 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 2001111984 and 2001112002.

It is not an unprimeable number, because it can be changed into a prime (2001112111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111172881 + ... + 111172898.

It is an arithmetic number, because the mean of its divisors is an integer number (481749190).

Almost surely, 2^2001112011 is an apocalyptic number.

2001112011 is a deficient number, since it is larger than the sum of its proper divisors (889383129).

2001112011 is a wasteful number, since it uses less digits than its factorization.

2001112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222345785 (or 222345782 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 2001112011 is about 44733.7904832577. The cubic root of 2001112011 is about 1260.1545143088.

Adding to 2001112011 its reverse (1102111002), we get a palindrome (3103223013).

The spelling of 2001112011 in words is "two billion, one million, one hundred twelve thousand, eleven".