117309828121 has 2 divisors, whose sum is σ = 117309828122. Its totient is φ = 117309828120.

The previous prime is 117309828071. The next prime is 117309828169. The reversal of 117309828121 is 121828903711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76487646096 + 40822182025 = 276564^2 + 202045^2 .

It is a cyclic number.

It is not a de Polignac number, because 117309828121 - 2¹⁹ = 117309303833 is a prime.

It is not a weakly prime, because it can be changed into another prime (117309828421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58654914060 + 58654914061.

It is an arithmetic number, because the mean of its divisors is an integer number (58654914061).

Almost surely, 2^117309828121 is an apocalyptic number.

It is an amenable number.

117309828121 is a deficient number, since it is larger than the sum of its proper divisors (1).

117309828121 is an equidigital number, since it uses as much as digits as its factorization.

117309828121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 43.

The spelling of 117309828121 in words is "one hundred seventeen billion, three hundred nine million, eight hundred twenty-eight thousand, one hundred twenty-one".