12112211222212 has 24 divisors (see below), whose sum is σ = 21200812254720. Its totient is φ = 6054836467680.

The previous prime is 12112211222201. The next prime is 12112211222227. The reversal of 12112211222212 is 21222211221121.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 719628637 + ... + 719645467.

It is an arithmetic number, because the mean of its divisors is an integer number (883367177280).

Almost surely, 2^{12112211222212} is an apocalyptic number.

It is an amenable number.

12112211222212 is a deficient number, since it is larger than the sum of its proper divisors (9088601032508).

12112211222212 is a wasteful number, since it uses less digits than its factorization.

12112211222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43851 (or 43849 counting only the distinct ones).

The product of its digits is 256, while the sum is 22.

Adding to 12112211222212 its reverse (21222211221121), we get a palindrome (33334422443333).

The spelling of 12112211222212 in words is "twelve trillion, one hundred twelve billion, two hundred eleven million, two hundred twenty-two thousand, two hundred twelve".