12121112323312 has 10 divisors (see below), whose sum is σ = 23484655126448. Its totient is φ = 6060556161648.

The previous prime is 12121112323273. The next prime is 12121112323337. The reversal of 12121112323312 is 21332321112121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 378784760088 + ... + 378784760119.

Almost surely, 2^{12121112323312} is an apocalyptic number.

It is an amenable number.

12121112323312 is a deficient number, since it is larger than the sum of its proper divisors (11363542803136).

12121112323312 is an equidigital number, since it uses as much as digits as its factorization.

12121112323312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757569520215 (or 757569520209 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

Adding to 12121112323312 its reverse (21332321112121), we get a palindrome (33453433435433).

The spelling of 12121112323312 in words is "twelve trillion, one hundred twenty-one billion, one hundred twelve million, three hundred twenty-three thousand, three hundred twelve".