12112221211100 has 36 divisors (see below), whose sum is σ = 27666863191800. Its totient is φ = 4589894352960.

The previous prime is 12112221211063. The next prime is 12112221211133. The reversal of 12112221211100 is 111212221121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3187424735 + ... + 3187428534.

It is an arithmetic number, because the mean of its divisors is an integer number (768523977550).

Almost surely, 2^{12112221211100} is an apocalyptic number.

12112221211100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12112221211100 is an abundant number, since it is smaller than the sum of its proper divisors (15554641980700).

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

12112221211100 is a wasteful number, since it uses less digits than its factorization.

12112221211100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6374853302 (or 6374853295 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12112221211100 its reverse (111212221121), we get a palindrome (12223433432221).

The spelling of 12112221211100 in words is "twelve trillion, one hundred twelve billion, two hundred twenty-one million, two hundred eleven thousand, one hundred".