122040045509 has 2 divisors, whose sum is σ = 122040045510. Its totient is φ = 122040045508.

The previous prime is 122040045493. The next prime is 122040045577. The reversal of 122040045509 is 905540040221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119372323009 + 2667722500 = 345503^2 + 51650^2 .

It is a cyclic number.

It is not a de Polignac number, because 122040045509 - 2⁴ = 122040045493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122040045109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61020022754 + 61020022755.

It is an arithmetic number, because the mean of its divisors is an integer number (61020022755).

Almost surely, 2^122040045509 is an apocalyptic number.

It is an amenable number.

122040045509 is a deficient number, since it is larger than the sum of its proper divisors (1).

122040045509 is an equidigital number, since it uses as much as digits as its factorization.

122040045509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 122040045509 in words is "one hundred twenty-two billion, forty million, forty-five thousand, five hundred nine".