12112121021200 has 60 divisors (see below), whose sum is σ = 29592580484880. Its totient is φ = 4762732324480.

The previous prime is 12112121021197. The next prime is 12112121021239. The reversal of 12112121021200 is 212012121121.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 256589134 + ... + 256636333.

It is an arithmetic number, because the mean of its divisors is an integer number (493209674748).

Almost surely, 2^{12112121021200} is an apocalyptic number.

12112121021200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12112121021200 is an abundant number, since it is smaller than the sum of its proper divisors (17480459463680).

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

12112121021200 is a wasteful number, since it uses less digits than its factorization.

12112121021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513225544 (or 513225533 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12112121021200 its reverse (212012121121), we get a palindrome (12324133142321).

The spelling of 12112121021200 in words is "twelve trillion, one hundred twelve billion, one hundred twenty-one million, twenty-one thousand, two hundred".