121281622117 has 2 divisors, whose sum is σ = 121281622118. Its totient is φ = 121281622116.

The previous prime is 121281622081. The next prime is 121281622141. The reversal of 121281622117 is 711226182121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108205470916 + 13076151201 = 328946^2 + 114351^2 .

It is a cyclic number.

It is not a de Polignac number, because 121281622117 - 2¹¹ = 121281620069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121281622177) 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, 60640811058 + 60640811059.

It is an arithmetic number, because the mean of its divisors is an integer number (60640811059).

Almost surely, 2^121281622117 is an apocalyptic number.

It is an amenable number.

121281622117 is a deficient number, since it is larger than the sum of its proper divisors (1).

121281622117 is an equidigital number, since it uses as much as digits as its factorization.

121281622117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 34.

The spelling of 121281622117 in words is "one hundred twenty-one billion, two hundred eighty-one million, six hundred twenty-two thousand, one hundred seventeen".