2011112001 has 6 divisors (see below), whose sum is σ = 2904939570. Its totient is φ = 1340741328.

The previous prime is 2011111997. The next prime is 2011112003. The reversal of 2011112001 is 1002111102.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2006950401 + 4161600 = 44799^2 + 2040^2 .

It is not a de Polignac number, because 2011112001 - 2² = 2011111997 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: 223456889 = 2011112001 / (2 + 0 + 1 + 1 + 1 + 1 + 2 + 0 + 0 + 1).

It is not an unprimeable number, because it can be changed into a prime (2011112003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111728436 + ... + 111728453.

It is an arithmetic number, because the mean of its divisors is an integer number (484156595).

Almost surely, 2^2011112001 is an apocalyptic number.

It is an amenable number.

2011112001 is a deficient number, since it is larger than the sum of its proper divisors (893827569).

2011112001 is a wasteful number, since it uses less digits than its factorization.

2011112001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223456895 (or 223456892 counting only the distinct ones).

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

The square root of 2011112001 is about 44845.4234119826. The cubic root of 2011112001 is about 1262.2501157698.

Adding to 2011112001 its reverse (1002111102), we get a palindrome (3013223103).

The spelling of 2011112001 in words is "two billion, eleven million, one hundred twelve thousand, one".