121304302289 has 2 divisors, whose sum is σ = 121304302290. Its totient is φ = 121304302288.

The previous prime is 121304302271. The next prime is 121304302303. The reversal of 121304302289 is 982203403121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103941760000 + 17362542289 = 322400^2 + 131767^2 .

It is an emirp because it is prime and its reverse (982203403121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121304302289 is a prime.

It is not a weakly prime, because it can be changed into another prime (121304382289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60652151144 + 60652151145.

It is an arithmetic number, because the mean of its divisors is an integer number (60652151145).

Almost surely, 2^121304302289 is an apocalyptic number.

It is an amenable number.

121304302289 is a deficient number, since it is larger than the sum of its proper divisors (1).

121304302289 is an equidigital number, since it uses as much as digits as its factorization.

121304302289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 121304302289 in words is "one hundred twenty-one billion, three hundred four million, three hundred two thousand, two hundred eighty-nine".