121321123312 has 40 divisors (see below), whose sum is σ = 240234624000. Its totient is φ = 59326959552.

The previous prime is 121321123307. The next prime is 121321123331. The reversal of 121321123312 is 213321123121.

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, 994389 + ... + 1109707.

It is an arithmetic number, because the mean of its divisors is an integer number (6005865600).

Almost surely, 2^121321123312 is an apocalyptic number.

It is an amenable number.

121321123312 is a deficient number, since it is larger than the sum of its proper divisors (118913500688).

121321123312 is a wasteful number, since it uses less digits than its factorization.

121321123312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116773 (or 116767 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

Adding to 121321123312 its reverse (213321123121), we get a palindrome (334642246433).

The spelling of 121321123312 in words is "one hundred twenty-one billion, three hundred twenty-one million, one hundred twenty-three thousand, three hundred twelve".