198796302121 has 2 divisors, whose sum is σ = 198796302122. Its totient is φ = 198796302120.

The previous prime is 198796302097. The next prime is 198796302127. The reversal of 198796302121 is 121203697891.

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., 159141155625 + 39655146496 = 398925^2 + 199136^2 .

It is an emirp because it is prime and its reverse (121203697891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 198796302121 - 2⁹ = 198796301609 is a prime.

It is not a weakly prime, because it can be changed into another prime (198796302127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99398151060 + 99398151061.

It is an arithmetic number, because the mean of its divisors is an integer number (99398151061).

Almost surely, 2^198796302121 is an apocalyptic number.

It is an amenable number.

198796302121 is a deficient number, since it is larger than the sum of its proper divisors (1).

198796302121 is an equidigital number, since it uses as much as digits as its factorization.

198796302121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 49.

The spelling of 198796302121 in words is "one hundred ninety-eight billion, seven hundred ninety-six million, three hundred two thousand, one hundred twenty-one".