12111011011011 has 24 divisors (see below), whose sum is σ = 17749983179152. Its totient is φ = 7339794739200.

The previous prime is 12111011011007. The next prime is 12111011011031. The reversal of 12111011011011 is 11011011011121.

It is not a de Polignac number, because 12111011011011 - 2² = 12111011011007 is a prime.

It is a Duffinian number.

12111011011011 is a modest number, since divided by 11011011 gives 12111 as remainder.

It is not an unprimeable number, because it can be changed into a prime (12111011011031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12595971 + ... + 13523331.

Almost surely, 2^{12111011011011} is an apocalyptic number.

12111011011011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12111011011011 is a deficient number, since it is larger than the sum of its proper divisors (5638972168141).

12111011011011 is a wasteful number, since it uses less digits than its factorization.

12111011011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963363 (or 963352 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 12.

Adding to 12111011011011 its reverse (11011011011121), we get a palindrome (23122022022132).

It can be divided in two parts, 121110110 and 11011, that added together give a palindrome (121121121).

The spelling of 12111011011011 in words is "twelve trillion, one hundred eleven billion, eleven million, eleven thousand, eleven".