2012111011 has 4 divisors (see below), whose sum is σ = 2012513800. Its totient is φ = 2011708224.

The previous prime is 2012110999. The next prime is 2012111029. The reversal of 2012111011 is 1101112102.

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 2012111011 - 2⁵ = 2012110979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012111081) 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, 193806 + ... + 203923.

It is an arithmetic number, because the mean of its divisors is an integer number (503128450).

Almost surely, 2^2012111011 is an apocalyptic number.

2012111011 is a deficient number, since it is larger than the sum of its proper divisors (402789).

2012111011 is an equidigital number, since it uses as much as digits as its factorization.

2012111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402788.

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 2012111011 is about 44856.5604009046. The cubic root of 2012111011 is about 1262.4590866851.

Adding to 2012111011 its reverse (1101112102), we get a palindrome (3113223113).

The spelling of 2012111011 in words is "two billion, twelve million, one hundred eleven thousand, eleven".