2011002111 has 6 divisors (see below), whose sum is σ = 2904780840. Its totient is φ = 1340668068.

The previous prime is 2011002109. The next prime is 2011002239. The reversal of 2011002111 is 1112001102.

It is a happy number.

It is not a de Polignac number, because 2011002111 - 2¹ = 2011002109 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: 223444679 = 2011002111 / (2 + 0 + 1 + 1 + 0 + 0 + 2 + 1 + 1 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 2011002093 and 2011002102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011002101) 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, 111722331 + ... + 111722348.

It is an arithmetic number, because the mean of its divisors is an integer number (484130140).

Almost surely, 2^2011002111 is an apocalyptic number.

2011002111 is a deficient number, since it is larger than the sum of its proper divisors (893778729).

2011002111 is a wasteful number, since it uses less digits than its factorization.

2011002111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223444685 (or 223444682 counting only the distinct ones).

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

The square root of 2011002111 is about 44844.1981866105. The cubic root of 2011002111 is about 1262.2271249747.

Adding to 2011002111 its reverse (1112001102), we get a palindrome (3123003213).

The spelling of 2011002111 in words is "two billion, eleven million, two thousand, one hundred eleven".