12212120112112 has 40 divisors (see below), whose sum is σ = 23696801271936. Its totient is φ = 6096823563456.

The previous prime is 12212120112107. The next prime is 12212120112131. The reversal of 12212120112112 is 21121102121221.

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 12212120112112.

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 7 ways as a sum of consecutive naturals, for example, 27844183 + ... + 28279369.

Almost surely, 2^{12212120112112} is an apocalyptic number.

It is an amenable number.

12212120112112 is a deficient number, since it is larger than the sum of its proper divisors (11484681159824).

12212120112112 is a wasteful number, since it uses less digits than its factorization.

12212120112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437845 (or 437839 counting only the distinct ones).

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

Adding to 12212120112112 its reverse (21121102121221), we get a palindrome (33333222233333).

The spelling of 12212120112112 in words is "twelve trillion, two hundred twelve billion, one hundred twenty million, one hundred twelve thousand, one hundred twelve".