12121011110012 has 24 divisors (see below), whose sum is σ = 25296023187456. Its totient is φ = 4968861697008.

The previous prime is 12121011110011. The next prime is 12121011110119. The reversal of 12121011110012 is 21001111012121.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121011110011) 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, 9410722268 + ... + 9410723555.

It is an arithmetic number, because the mean of its divisors is an integer number (1054000966144).

Almost surely, 2^{12121011110012} is an apocalyptic number.

It is an amenable number.

12121011110012 is an abundant number, since it is smaller than the sum of its proper divisors (13175012077444).

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

12121011110012 is a wasteful number, since it uses less digits than its factorization.

12121011110012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18821445857 (or 18821445855 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 12121011110012 its reverse (21001111012121), we get a palindrome (33122122122133).

The spelling of 12121011110012 in words is "twelve trillion, one hundred twenty-one billion, eleven million, one hundred ten thousand, twelve".