12112113012210 has 128 divisors (see below), whose sum is σ = 32731042014720. Its totient is φ = 3226605321600.

The previous prime is 12112113012191. The next prime is 12112113012227. The reversal of 12112113012210 is 1221031121121.

It is a happy number.

12112113012210 is a `hidden beast` number, since 1 + 21 + 121 + 1 + 301 + 221 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21216510 + ... + 21779910.

It is an arithmetic number, because the mean of its divisors is an integer number (255711265740).

Almost surely, 2^{12112113012210} is an apocalyptic number.

12112113012210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12112113012210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16365521007360).

12112113012210 is an abundant number, since it is smaller than the sum of its proper divisors (20618929002510).

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

12112113012210 is an frugal number, since it uses more digits than its factorization.

12112113012210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564412 (or 564394 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 12112113012210 its reverse (1221031121121), we get a palindrome (13333144133331).

The spelling of 12112113012210 in words is "twelve trillion, one hundred twelve billion, one hundred thirteen million, twelve thousand, two hundred ten".