121663316041 has 2 divisors, whose sum is σ = 121663316042. Its totient is φ = 121663316040.

The previous prime is 121663316023. The next prime is 121663316053. The reversal of 121663316041 is 140613366121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103166228025 + 18497088016 = 321195^2 + 136004^2 .

It is an emirp because it is prime and its reverse (140613366121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121663316041 - 2⁵ = 121663316009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121663315988 and 121663316006.

It is not a weakly prime, because it can be changed into another prime (121663316081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60831658020 + 60831658021.

It is an arithmetic number, because the mean of its divisors is an integer number (60831658021).

Almost surely, 2^121663316041 is an apocalyptic number.

It is an amenable number.

121663316041 is a deficient number, since it is larger than the sum of its proper divisors (1).

121663316041 is an equidigital number, since it uses as much as digits as its factorization.

121663316041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The spelling of 121663316041 in words is "one hundred twenty-one billion, six hundred sixty-three million, three hundred sixteen thousand, forty-one".