121298934161 has 2 divisors, whose sum is σ = 121298934162. Its totient is φ = 121298934160.

The previous prime is 121298934139. The next prime is 121298934173. The reversal of 121298934161 is 161439892121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81256923136 + 40042011025 = 285056^2 + 200105^2 .

It is a cyclic number.

It is not a de Polignac number, because 121298934161 - 2¹⁴ = 121298917777 is a prime.

It is a super-2 number, since 2×121298934161² (a number of 23 digits) contains 22 as substring.

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 (121298934121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60649467080 + 60649467081.

It is an arithmetic number, because the mean of its divisors is an integer number (60649467081).

Almost surely, 2^121298934161 is an apocalyptic number.

It is an amenable number.

121298934161 is a deficient number, since it is larger than the sum of its proper divisors (1).

121298934161 is an equidigital number, since it uses as much as digits as its factorization.

121298934161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 47.

The spelling of 121298934161 in words is "one hundred twenty-one billion, two hundred ninety-eight million, nine hundred thirty-four thousand, one hundred sixty-one".