12111101211100 has 72 divisors (see below), whose sum is σ = 27827889526080. Its totient is φ = 4559333560320.

The previous prime is 12111101211067. The next prime is 12111101211103. The reversal of 12111101211100 is 111210111121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111101211103) 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 23 ways as a sum of consecutive naturals, for example, 67718596 + ... + 67897204.

It is an arithmetic number, because the mean of its divisors is an integer number (386498465640).

Almost surely, 2^{12111101211100} is an apocalyptic number.

12111101211100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111101211100 is an abundant number, since it is smaller than the sum of its proper divisors (15716788314980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12111101211100 is a wasteful number, since it uses less digits than its factorization.

12111101211100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218527 (or 218520 counting only the distinct ones).

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

Adding to 12111101211100 its reverse (111210111121), we get a palindrome (12222311322221).

The spelling of 12111101211100 in words is "twelve trillion, one hundred eleven billion, one hundred one million, two hundred eleven thousand, one hundred".