122040344509 has 2 divisors, whose sum is σ = 122040344510. Its totient is φ = 122040344508.

The previous prime is 122040344483. The next prime is 122040344519. The reversal of 122040344509 is 905443040221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85997322009 + 36043022500 = 293253^2 + 189850^2 .

It is a cyclic number.

It is not a de Polignac number, because 122040344509 - 2⁷ = 122040344381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122040344519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61020172254 + 61020172255.

It is an arithmetic number, because the mean of its divisors is an integer number (61020172255).

Almost surely, 2^122040344509 is an apocalyptic number.

It is an amenable number.

122040344509 is a deficient number, since it is larger than the sum of its proper divisors (1).

122040344509 is an equidigital number, since it uses as much as digits as its factorization.

122040344509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 122040344509 in words is "one hundred twenty-two billion, forty million, three hundred forty-four thousand, five hundred nine".