121000709 has 2 divisors, whose sum is σ = 121000710. Its totient is φ = 121000708.

The previous prime is 121000703. The next prime is 121000741. The reversal of 121000709 is 907000121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85562500 + 35438209 = 9250^2 + 5953^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121000709 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121000703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500354 + 60500355.

It is an arithmetic number, because the mean of its divisors is an integer number (60500355).

Almost surely, 2^121000709 is an apocalyptic number.

It is an amenable number.

121000709 is a deficient number, since it is larger than the sum of its proper divisors (1).

121000709 is an equidigital number, since it uses as much as digits as its factorization.

121000709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 121000709 is about 11000.0322272255. The cubic root of 121000709 is about 494.6097103770.

The spelling of 121000709 in words is "one hundred twenty-one million, seven hundred nine", and thus it is an aban number.