12121022011112 has 32 divisors (see below), whose sum is σ = 25986931806720. Its totient is φ = 5192061076800.

The previous prime is 12121022011037. The next prime is 12121022011117. The reversal of 12121022011112 is 21111022012121.

It is not an unprimeable number, because it can be changed into a prime (12121022011117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55361483 + ... + 55579994.

It is an arithmetic number, because the mean of its divisors is an integer number (812091618960).

Almost surely, 2^{12121022011112} is an apocalyptic number.

It is an amenable number.

12121022011112 is an abundant number, since it is smaller than the sum of its proper divisors (13865909795608).

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

12121022011112 is a wasteful number, since it uses less digits than its factorization.

12121022011112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110943441 (or 110943437 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12121022011112 its reverse (21111022012121), we get a palindrome (33232044023233).

The spelling of 12121022011112 in words is "twelve trillion, one hundred twenty-one billion, twenty-two million, eleven thousand, one hundred twelve".