2112421343312 has 20 divisors (see below), whose sum is σ = 4677504403296. Its totient is φ = 905323432800.

The previous prime is 2112421343311. The next prime is 2112421343321. The reversal of 2112421343312 is 2133431242112.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112421343311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9430452314 + ... + 9430452537.

Almost surely, 2^{2112421343312} is an apocalyptic number.

It is an amenable number.

2112421343312 is an abundant number, since it is smaller than the sum of its proper divisors (2565083059984).

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

2112421343312 is a wasteful number, since it uses less digits than its factorization.

2112421343312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18860904866 (or 18860904860 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

Adding to 2112421343312 its reverse (2133431242112), we get a palindrome (4245852585424).

The spelling of 2112421343312 in words is "two trillion, one hundred twelve billion, four hundred twenty-one million, three hundred forty-three thousand, three hundred twelve".