121443440312 has 32 divisors (see below), whose sum is σ = 228516232320. Its totient is φ = 60506016480.

The previous prime is 121443440297. The next prime is 121443440333. The reversal of 121443440312 is 213044344121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4347173 + ... + 4375019.

It is an arithmetic number, because the mean of its divisors is an integer number (7141132260).

Almost surely, 2^121443440312 is an apocalyptic number.

It is an amenable number.

121443440312 is a deficient number, since it is larger than the sum of its proper divisors (107072792008).

121443440312 is a wasteful number, since it uses less digits than its factorization.

121443440312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29771 (or 29767 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 121443440312 its reverse (213044344121), we get a palindrome (334487784433).

The spelling of 121443440312 in words is "one hundred twenty-one billion, four hundred forty-three million, four hundred forty thousand, three hundred twelve".