121003110857987 has 2 divisors, whose sum is σ = 121003110857988. Its totient is φ = 121003110857986.

The previous prime is 121003110857983. The next prime is 121003110858017. The reversal of 121003110857987 is 789758011300121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121003110857987 - 2² = 121003110857983 is a prime.

It is not a weakly prime, because it can be changed into another prime (121003110857983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60501555428993 + 60501555428994.

It is an arithmetic number, because the mean of its divisors is an integer number (60501555428994).

Almost surely, 2^{121003110857987} is an apocalyptic number.

121003110857987 is a deficient number, since it is larger than the sum of its proper divisors (1).

121003110857987 is an equidigital number, since it uses as much as digits as its factorization.

121003110857987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 53.

The spelling of 121003110857987 in words is "one hundred twenty-one trillion, three billion, one hundred ten million, eight hundred fifty-seven thousand, nine hundred eighty-seven".