12011111102111 has 16 divisors (see below), whose sum is σ = 13904155297440. Its totient is φ = 10254398714880.

The previous prime is 12011111102101. The next prime is 12011111102183. The reversal of 12011111102111 is 11120111111021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12011111102111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011111102101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70188656 + ... + 70359573.

It is an arithmetic number, because the mean of its divisors is an integer number (869009706090).

Almost surely, 2^{12011111102111} is an apocalyptic number.

12011111102111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12011111102111 is a deficient number, since it is larger than the sum of its proper divisors (1893044195329).

12011111102111 is a wasteful number, since it uses less digits than its factorization.

12011111102111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140548714.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 12011111102111 its reverse (11120111111021), we get a palindrome (23131222213132).

It can be divided in two parts, 120111111021 and 11, that multiplied together give a palindrome (1321222221231).

The spelling of 12011111102111 in words is "twelve trillion, eleven billion, one hundred eleven million, one hundred two thousand, one hundred eleven".