12111111111101 has 8 divisors (see below), whose sum is σ = 12823559801280. Its totient is φ = 11398665797568.

The previous prime is 12111111111083. The next prime is 12111111111139. The reversal of 12111111111101 is 10111111111121.

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 12111111111101 - 2³⁰ = 12110037369277 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 (12111111111401) 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, 13696370 + ... + 14553788.

It is an arithmetic number, because the mean of its divisors is an integer number (1602944975160).

Almost surely, 2^{12111111111101} is an apocalyptic number.

It is an amenable number.

12111111111101 is a deficient number, since it is larger than the sum of its proper divisors (712448690179).

12111111111101 is an equidigital number, since it uses as much as digits as its factorization.

12111111111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688323.

The product of its (nonzero) digits is 2, while the sum is 14.

Adding to 12111111111101 its reverse (10111111111121), we get a palindrome (22222222222222).

The spelling of 12111111111101 in words is "twelve trillion, one hundred eleven billion, one hundred eleven million, one hundred eleven thousand, one hundred one".