2012012111 has 4 divisors (see below), whose sum is σ = 2012446800. Its totient is φ = 2011577424.

The previous prime is 2012012063. The next prime is 2012012153. The reversal of 2012012111 is 1112102102.

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 2012012111 - 2¹⁰ = 2012011087 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012012092 and 2012012101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012012161) 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, 210326 + ... + 219683.

It is an arithmetic number, because the mean of its divisors is an integer number (503111700).

Almost surely, 2^2012012111 is an apocalyptic number.

2012012111 is a deficient number, since it is larger than the sum of its proper divisors (434689).

2012012111 is an equidigital number, since it uses as much as digits as its factorization.

2012012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434688.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 2012012111 is about 44855.4579845084. The cubic root of 2012012111 is about 1262.4384020661.

Adding to 2012012111 its reverse (1112102102), we get a palindrome (3124114213).

The spelling of 2012012111 in words is "two billion, twelve million, twelve thousand, one hundred eleven".