112121212222012 has 48 divisors (see below), whose sum is σ = 229714716591360. Its totient is φ = 46879344316800.

The previous prime is 112121212221959. The next prime is 112121212222081. The reversal of 112121212222012 is 210222212121211.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94625187 + ... + 95802757.

It is an arithmetic number, because the mean of its divisors is an integer number (4785723262320).

Almost surely, 2^{112121212222012} is an apocalyptic number.

It is an amenable number.

112121212222012 is an abundant number, since it is smaller than the sum of its proper divisors (117593504369348).

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

112121212222012 is a wasteful number, since it uses less digits than its factorization.

112121212222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260562 (or 1260560 counting only the distinct ones).

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

Adding to 112121212222012 its reverse (210222212121211), we get a palindrome (322343424343223).

The spelling of 112121212222012 in words is "one hundred twelve trillion, one hundred twenty-one billion, two hundred twelve million, two hundred twenty-two thousand, twelve".