12112121212002 has 112 divisors (see below), whose sum is σ = 32204704271040. Its totient is φ = 3341274735456.

The previous prime is 12112121211989. The next prime is 12112121212003. The reversal of 12112121212002 is 20021212121121.

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

It is not an unprimeable number, because it can be changed into a prime (12112121212003) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 20165488 + ... + 20757435.

It is an arithmetic number, because the mean of its divisors is an integer number (287542002420).

Almost surely, 2^{12112121212002} is an apocalyptic number.

12112121212002 is an abundant number, since it is smaller than the sum of its proper divisors (20092583059038).

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

12112121212002 is an equidigital number, since it uses as much as digits as its factorization.

12112121212002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40922979 (or 40922964 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12112121212002 its reverse (20021212121121), we get a palindrome (32133333333123).

The spelling of 12112121212002 in words is "twelve trillion, one hundred twelve billion, one hundred twenty-one million, two hundred twelve thousand, two".