122148709 has 2 divisors, whose sum is σ = 122148710. Its totient is φ = 122148708.

The previous prime is 122148661. The next prime is 122148721. The reversal of 122148709 is 907841221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121484484 + 664225 = 11022^2 + 815^2 .

It is a cyclic number.

It is not a de Polignac number, because 122148709 - 2¹⁹ = 121624421 is a prime.

It is a super-2 number, since 2×122148709² = 29840614220733362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122148749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61074354 + 61074355.

It is an arithmetic number, because the mean of its divisors is an integer number (61074355).

Almost surely, 2^122148709 is an apocalyptic number.

It is an amenable number.

122148709 is a deficient number, since it is larger than the sum of its proper divisors (1).

122148709 is an equidigital number, since it uses as much as digits as its factorization.

122148709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 122148709 is about 11052.0907071920. The cubic root of 122148709 is about 496.1690005205.

The spelling of 122148709 in words is "one hundred twenty-two million, one hundred forty-eight thousand, seven hundred nine".