12112201121212 has 96 divisors (see below), whose sum is σ = 22323369337920. Its totient is φ = 5742693949440.

The previous prime is 12112201121201. The next prime is 12112201121221. The reversal of 12112201121212 is 21212110221121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12112201121212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1084248387 + ... + 1084259557.

It is an arithmetic number, because the mean of its divisors is an integer number (232535097270).

Almost surely, 2^{12112201121212} is an apocalyptic number.

It is an amenable number.

12112201121212 is a deficient number, since it is larger than the sum of its proper divisors (10211168216708).

12112201121212 is a wasteful number, since it uses less digits than its factorization.

12112201121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12031 (or 12029 counting only the distinct ones).

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

Adding to 12112201121212 its reverse (21212110221121), we get a palindrome (33324311342333).

Subtracting 12112201121212 from its reverse (21212110221121), we obtain a palindrome (9099909099909).

The spelling of 12112201121212 in words is "twelve trillion, one hundred twelve billion, two hundred one million, one hundred twenty-one thousand, two hundred twelve".