121030293809 has 2 divisors, whose sum is σ = 121030293810. Its totient is φ = 121030293808.

The previous prime is 121030293781. The next prime is 121030293829. The reversal of 121030293809 is 908392030121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118318800625 + 2711493184 = 343975^2 + 52072^2 .

It is a cyclic number.

It is not a de Polignac number, because 121030293809 - 2¹⁶ = 121030228273 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (121030293829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60515146904 + 60515146905.

It is an arithmetic number, because the mean of its divisors is an integer number (60515146905).

Almost surely, 2^121030293809 is an apocalyptic number.

It is an amenable number.

121030293809 is a deficient number, since it is larger than the sum of its proper divisors (1).

121030293809 is an equidigital number, since it uses as much as digits as its factorization.

121030293809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 38.

The spelling of 121030293809 in words is "one hundred twenty-one billion, thirty million, two hundred ninety-three thousand, eight hundred nine".