121321301210987 has 2 divisors, whose sum is σ = 121321301210988. Its totient is φ = 121321301210986.

The previous prime is 121321301210983. The next prime is 121321301211031. The reversal of 121321301210987 is 789012103123121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121321301210987 - 2² = 121321301210983 is a prime.

It is not a weakly prime, because it can be changed into another prime (121321301210983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60660650605493 + 60660650605494.

It is an arithmetic number, because the mean of its divisors is an integer number (60660650605494).

Almost surely, 2^{121321301210987} is an apocalyptic number.

121321301210987 is a deficient number, since it is larger than the sum of its proper divisors (1).

121321301210987 is an equidigital number, since it uses as much as digits as its factorization.

121321301210987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 41.

The spelling of 121321301210987 in words is "one hundred twenty-one trillion, three hundred twenty-one billion, three hundred one million, two hundred ten thousand, nine hundred eighty-seven".