121241334161 has 2 divisors, whose sum is σ = 121241334162. Its totient is φ = 121241334160.

The previous prime is 121241334133. The next prime is 121241334191. The reversal of 121241334161 is 161433142121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108043690000 + 13197644161 = 328700^2 + 114881^2 .

It is an emirp because it is prime and its reverse (161433142121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121241334161 - 2¹⁰ = 121241333137 is a prime.

It is a super-2 number, since 2×121241334161² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121241334101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60620667080 + 60620667081.

It is an arithmetic number, because the mean of its divisors is an integer number (60620667081).

Almost surely, 2^121241334161 is an apocalyptic number.

It is an amenable number.

121241334161 is a deficient number, since it is larger than the sum of its proper divisors (1).

121241334161 is an equidigital number, since it uses as much as digits as its factorization.

121241334161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 29.

Adding to 121241334161 its reverse (161433142121), we get a palindrome (282674476282).

The spelling of 121241334161 in words is "one hundred twenty-one billion, two hundred forty-one million, three hundred thirty-four thousand, one hundred sixty-one".