12012112011 has 32 divisors (see below), whose sum is σ = 16691132160. Its totient is φ = 7674902144.

The previous prime is 12012111989. The next prime is 12012112027. The reversal of 12012112011 is 11021121021.

It is a cyclic number.

It is not a de Polignac number, because 12012112011 - 2¹⁰ = 12012110987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12012112031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8748121 + ... + 8749493.

It is an arithmetic number, because the mean of its divisors is an integer number (521597880).

Almost surely, 2^12012112011 is an apocalyptic number.

12012112011 is a deficient number, since it is larger than the sum of its proper divisors (4679020149).

12012112011 is a wasteful number, since it uses less digits than its factorization.

12012112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2075.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12012112011 its reverse (11021121021), we get a palindrome (23033233032).

The spelling of 12012112011 in words is "twelve billion, twelve million, one hundred twelve thousand, eleven".