12111101112211 has 4 divisors (see below), whose sum is σ = 12823518824712. Its totient is φ = 11398683399712.

The previous prime is 12111101112049. The next prime is 12111101112223. The reversal of 12111101112211 is 11221110111121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12111101112211 - 2³³ = 12102511177619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12111101116211) 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 3 ways as a sum of consecutive naturals, for example, 356208856225 + ... + 356208856258.

It is an arithmetic number, because the mean of its divisors is an integer number (3205879706178).

Almost surely, 2^{12111101112211} is an apocalyptic number.

12111101112211 is a deficient number, since it is larger than the sum of its proper divisors (712417712501).

12111101112211 is an equidigital number, since it uses as much as digits as its factorization.

12111101112211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712417712500.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 12111101112211 its reverse (11221110111121), we get a palindrome (23332211223332).

The spelling of 12111101112211 in words is "twelve trillion, one hundred eleven billion, one hundred one million, one hundred twelve thousand, two hundred eleven".