121121321231312 has 40 divisors (see below), whose sum is σ = 234717822112800. Its totient is φ = 60548981328000.

The previous prime is 121121321231291. The next prime is 121121321231327. The reversal of 121121321231312 is 213132123121121.

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, 2115590687 + ... + 2115647937.

It is an arithmetic number, because the mean of its divisors is an integer number (5867945552820).

Almost surely, 2^{121121321231312} is an apocalyptic number.

It is an amenable number.

121121321231312 is a deficient number, since it is larger than the sum of its proper divisors (113596500881488).

121121321231312 is a wasteful number, since it uses less digits than its factorization.

121121321231312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80451 (or 80445 counting only the distinct ones).

The product of its digits is 864, while the sum is 26.

Adding to 121121321231312 its reverse (213132123121121), we get a palindrome (334253444352433).

The spelling of 121121321231312 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, three hundred twenty-one million, two hundred thirty-one thousand, three hundred twelve".