2011111012 has 24 divisors (see below), whose sum is σ = 3783507840. Its totient is φ = 932361120.

The previous prime is 2011111001. The next prime is 2011111043. The reversal of 2011111012 is 2101111102.

It is a self number, because there is not a number n which added to its sum of digits gives 2011111012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277939 + ... + 285082.

It is an arithmetic number, because the mean of its divisors is an integer number (157646160).

Almost surely, 2^2011111012 is an apocalyptic number.

It is an amenable number.

2011111012 is a deficient number, since it is larger than the sum of its proper divisors (1772396828).

2011111012 is a wasteful number, since it uses less digits than its factorization.

2011111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563091 (or 563089 counting only the distinct ones).

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

The square root of 2011111012 is about 44845.4123852151. The cubic root of 2011111012 is about 1262.2499088585.

Adding to 2011111012 its reverse (2101111102), we get a palindrome (4112222114).

The spelling of 2011111012 in words is "two billion, eleven million, one hundred eleven thousand, twelve".