121231301320312 has 8 divisors (see below), whose sum is σ = 227308689975600. Its totient is φ = 60615650660152.

The previous prime is 121231301320307. The next prime is 121231301320313. The reversal of 121231301320312 is 213023103132121.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121231301320313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7576956332512 + ... + 7576956332527.

It is an arithmetic number, because the mean of its divisors is an integer number (28413586246950).

Almost surely, 2^{121231301320312} is an apocalyptic number.

It is an amenable number.

121231301320312 is a deficient number, since it is larger than the sum of its proper divisors (106077388655288).

121231301320312 is a wasteful number, since it uses less digits than its factorization.

121231301320312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15153912665045 (or 15153912665041 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 121231301320312 its reverse (213023103132121), we get a palindrome (334254404452433).

The spelling of 121231301320312 in words is "one hundred twenty-one trillion, two hundred thirty-one billion, three hundred one million, three hundred twenty thousand, three hundred twelve".