12111000001111 has 8 divisors (see below), whose sum is σ = 13263408564624. Its totient is φ = 10967159531520.

The previous prime is 12111000001109. The next prime is 12111000001117. The reversal of 12111000001111 is 11110000011121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12111000001111 - 2¹ = 12111000001109 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 (12111000001117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2142020520 + ... + 2142026173.

It is an arithmetic number, because the mean of its divisors is an integer number (1657926070578).

Almost surely, 2^{12111000001111} is an apocalyptic number.

12111000001111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12111000001111 is a deficient number, since it is larger than the sum of its proper divisors (1152408563513).

12111000001111 is a wasteful number, since it uses less digits than its factorization.

12111000001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4284046961.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 12111000001111 its reverse (11110000011121), we get a palindrome (23221000012232).

It can be divided in two parts, 1 and 2111000001111, that added together give a palindrome (2111000001112).

The spelling of 12111000001111 in words is "twelve trillion, one hundred eleven billion, one thousand, one hundred eleven".