121488884685191 has 2 divisors, whose sum is σ = 121488884685192. Its totient is φ = 121488884685190.

The previous prime is 121488884685061. The next prime is 121488884685199. The reversal of 121488884685191 is 191586488884121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121488884685191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121488884685199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60744442342595 + 60744442342596.

It is an arithmetic number, because the mean of its divisors is an integer number (60744442342596).

Almost surely, 2^{121488884685191} is an apocalyptic number.

121488884685191 is a deficient number, since it is larger than the sum of its proper divisors (1).

121488884685191 is an equidigital number, since it uses as much as digits as its factorization.

121488884685191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 283115520, while the sum is 74.

The spelling of 121488884685191 in words is "one hundred twenty-one trillion, four hundred eighty-eight billion, eight hundred eighty-four million, six hundred eighty-five thousand, one hundred ninety-one".