122135332009 has 2 divisors, whose sum is σ = 122135332010. Its totient is φ = 122135332008.

The previous prime is 122135331971. The next prime is 122135332061. The reversal of 122135332009 is 900233531221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85997322009 + 36138010000 = 293253^2 + 190100^2 .

It is a cyclic number.

It is not a de Polignac number, because 122135332009 - 2⁷ = 122135331881 is a prime.

It is not a weakly prime, because it can be changed into another prime (122135332079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61067666004 + 61067666005.

It is an arithmetic number, because the mean of its divisors is an integer number (61067666005).

Almost surely, 2^122135332009 is an apocalyptic number.

It is an amenable number.

122135332009 is a deficient number, since it is larger than the sum of its proper divisors (1).

122135332009 is an equidigital number, since it uses as much as digits as its factorization.

122135332009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 31.

The spelling of 122135332009 in words is "one hundred twenty-two billion, one hundred thirty-five million, three hundred thirty-two thousand, nine".