12112220122212 has 48 divisors (see below), whose sum is σ = 32300725871232. Its totient is φ = 3460476583680.

The previous prime is 12112220122169. The next prime is 12112220122231. The reversal of 12112220122212 is 21222102221121.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1426089 + ... + 5124272.

It is an arithmetic number, because the mean of its divisors is an integer number (672931788984).

Almost surely, 2^{12112220122212} is an apocalyptic number.

12112220122212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12112220122212 is an abundant number, since it is smaller than the sum of its proper divisors (20188505749020).

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

12112220122212 is a wasteful number, since it uses less digits than its factorization.

12112220122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6572388 (or 6572386 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 12112220122212 its reverse (21222102221121), we get a palindrome (33334322343333).

The spelling of 12112220122212 in words is "twelve trillion, one hundred twelve billion, two hundred twenty million, one hundred twenty-two thousand, two hundred twelve".