12112211221012 has 12 divisors (see below), whose sum is σ = 24224422442080. Its totient is φ = 5190947666136.

The previous prime is 12112211220947. The next prime is 12112211221027. The reversal of 12112211221012 is 21012211221121.

It is a happy number.

12112211221012 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216289486062 + ... + 216289486117.

Almost surely, 2^{12112211221012} is an apocalyptic number.

It is an amenable number.

12112211221012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12112211221012 is a wasteful number, since it uses less digits than its factorization.

12112211221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432578972190 (or 432578972188 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12112211221012 its reverse (21012211221121), we get a palindrome (33124422442133).

The spelling of 12112211221012 in words is "twelve trillion, one hundred twelve billion, two hundred eleven million, two hundred twenty-one thousand, twelve".