121230512317 has 2 divisors, whose sum is σ = 121230512318. Its totient is φ = 121230512316.

The previous prime is 121230512303. The next prime is 121230512369. The reversal of 121230512317 is 713215032121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121191711876 + 38800441 = 348126^2 + 6229^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121230512317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121230522317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60615256158 + 60615256159.

It is an arithmetic number, because the mean of its divisors is an integer number (60615256159).

Almost surely, 2^121230512317 is an apocalyptic number.

It is an amenable number.

121230512317 is a deficient number, since it is larger than the sum of its proper divisors (1).

121230512317 is an equidigital number, since it uses as much as digits as its factorization.

121230512317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 28.

Adding to 121230512317 its reverse (713215032121), we get a palindrome (834445544438).

The spelling of 121230512317 in words is "one hundred twenty-one billion, two hundred thirty million, five hundred twelve thousand, three hundred seventeen".