121121003321987 has 2 divisors, whose sum is σ = 121121003321988. Its totient is φ = 121121003321986.

The previous prime is 121121003321953. The next prime is 121121003322047. The reversal of 121121003321987 is 789123300121121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121121003321987 - 2³⁰ = 121119929580163 is a prime.

It is not a weakly prime, because it can be changed into another prime (121121003321917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60560501660993 + 60560501660994.

It is an arithmetic number, because the mean of its divisors is an integer number (60560501660994).

Almost surely, 2^{121121003321987} is an apocalyptic number.

121121003321987 is a deficient number, since it is larger than the sum of its proper divisors (1).

121121003321987 is an equidigital number, since it uses as much as digits as its factorization.

121121003321987 is an evil number, because the sum of its binary digits is even.

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

The spelling of 121121003321987 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, three million, three hundred twenty-one thousand, nine hundred eighty-seven".