121808527234099 has 2 divisors, whose sum is σ = 121808527234100. Its totient is φ = 121808527234098.

The previous prime is 121808527234033. The next prime is 121808527234151. The reversal of 121808527234099 is 990432725808121.

It is a strong prime.

It is an emirp because it is prime and its reverse (990432725808121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121808527234099 - 2¹⁹ = 121808526709811 is a prime.

It is not a weakly prime, because it can be changed into another prime (121808527234699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60904263617049 + 60904263617050.

It is an arithmetic number, because the mean of its divisors is an integer number (60904263617050).

Almost surely, 2^{121808527234099} is an apocalyptic number.

121808527234099 is a deficient number, since it is larger than the sum of its proper divisors (1).

121808527234099 is an equidigital number, since it uses as much as digits as its factorization.

121808527234099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17418240, while the sum is 61.

The spelling of 121808527234099 in words is "one hundred twenty-one trillion, eight hundred eight billion, five hundred twenty-seven million, two hundred thirty-four thousand, ninety-nine".