121001098987 has 2 divisors, whose sum is σ = 121001098988. Its totient is φ = 121001098986.

The previous prime is 121001098963. The next prime is 121001098991. The reversal of 121001098987 is 789890100121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121001098987 - 2¹⁹ = 121000574699 is a prime.

It is not a weakly prime, because it can be changed into another prime (121001098957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500549493 + 60500549494.

It is an arithmetic number, because the mean of its divisors is an integer number (60500549494).

Almost surely, 2^121001098987 is an apocalyptic number.

121001098987 is a deficient number, since it is larger than the sum of its proper divisors (1).

121001098987 is an equidigital number, since it uses as much as digits as its factorization.

121001098987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 46.

The spelling of 121001098987 in words is "one hundred twenty-one billion, one million, ninety-eight thousand, nine hundred eighty-seven".