12111200011111 has 8 divisors (see below), whose sum is σ = 12149870217264. Its totient is φ = 12072584233920.

The previous prime is 12111200011103. The next prime is 12111200011129. The reversal of 12111200011111 is 11111000211121.

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 12111200011111 - 2³ = 12111200011103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12111200011091 and 12111200011100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111200011511) 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 7 ways as a sum of consecutive naturals, for example, 13161480 + ... + 14051581.

It is an arithmetic number, because the mean of its divisors is an integer number (1518733777158).

Almost surely, 2^{12111200011111} is an apocalyptic number.

12111200011111 is a deficient number, since it is larger than the sum of its proper divisors (38670206153).

12111200011111 is an equidigital number, since it uses as much as digits as its factorization.

12111200011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27214481.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 12111200011111 its reverse (11111000211121), we get a palindrome (23222200222232).

The spelling of 12111200011111 in words is "twelve trillion, one hundred eleven billion, two hundred million, eleven thousand, one hundred eleven".