121711622489 has 2 divisors, whose sum is σ = 121711622490. Its totient is φ = 121711622488.

The previous prime is 121711622477. The next prime is 121711622677. The reversal of 121711622489 is 984226117121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61236451600 + 60475170889 = 247460^2 + 245917^2 .

It is a cyclic number.

It is not a de Polignac number, because 121711622489 - 2⁸ = 121711622233 is a prime.

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 (121711622089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60855811244 + 60855811245.

It is an arithmetic number, because the mean of its divisors is an integer number (60855811245).

Almost surely, 2^121711622489 is an apocalyptic number.

It is an amenable number.

121711622489 is a deficient number, since it is larger than the sum of its proper divisors (1).

121711622489 is an equidigital number, since it uses as much as digits as its factorization.

121711622489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 44.

The spelling of 121711622489 in words is "one hundred twenty-one billion, seven hundred eleven million, six hundred twenty-two thousand, four hundred eighty-nine".