12121101023312 has 20 divisors (see below), whose sum is σ = 23484688431360. Its totient is φ = 6060536266848.

The previous prime is 12121101023267. The next prime is 12121101023329. The reversal of 12121101023312 is 21332010112121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10709843 + ... + 11787405.

It is an arithmetic number, because the mean of its divisors is an integer number (1174234421568).

Almost surely, 2^{12121101023312} is an apocalyptic number.

It is an amenable number.

12121101023312 is a deficient number, since it is larger than the sum of its proper divisors (11363587408048).

12121101023312 is a wasteful number, since it uses less digits than its factorization.

12121101023312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780610 (or 1780604 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 12121101023312 its reverse (21332010112121), we get a palindrome (33453111135433).

The spelling of 12121101023312 in words is "twelve trillion, one hundred twenty-one billion, one hundred one million, twenty-three thousand, three hundred twelve".