122442040109 has 2 divisors, whose sum is σ = 122442040110. Its totient is φ = 122442040108.

The previous prime is 122442040027. The next prime is 122442040111. The reversal of 122442040109 is 901040244221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104666484484 + 17775555625 = 323522^2 + 133325^2 .

It is a cyclic number.

It is not a de Polignac number, because 122442040109 - 2³⁶ = 53722563373 is a prime.

Together with 122442040111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122442040129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61221020054 + 61221020055.

It is an arithmetic number, because the mean of its divisors is an integer number (61221020055).

Almost surely, 2^122442040109 is an apocalyptic number.

It is an amenable number.

122442040109 is a deficient number, since it is larger than the sum of its proper divisors (1).

122442040109 is an equidigital number, since it uses as much as digits as its factorization.

122442040109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

The spelling of 122442040109 in words is "one hundred twenty-two billion, four hundred forty-two million, forty thousand, one hundred nine".