122810609 has 2 divisors, whose sum is σ = 122810610. Its totient is φ = 122810608.

The previous prime is 122810591. The next prime is 122810693. The reversal of 122810609 is 906018221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122036209 + 774400 = 11047^2 + 880^2 .

It is an emirp because it is prime and its reverse (906018221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122810609 - 2⁸ = 122810353 is a prime.

It is not a weakly prime, because it can be changed into another prime (122810209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61405304 + 61405305.

It is an arithmetic number, because the mean of its divisors is an integer number (61405305).

Almost surely, 2^122810609 is an apocalyptic number.

It is an amenable number.

122810609 is a deficient number, since it is larger than the sum of its proper divisors (1).

122810609 is an equidigital number, since it uses as much as digits as its factorization.

122810609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 122810609 is about 11081.9948114047. The cubic root of 122810609 is about 497.0636008790.

The spelling of 122810609 in words is "one hundred twenty-two million, eight hundred ten thousand, six hundred nine".