122240042209 has 2 divisors, whose sum is σ = 122240042210. Its totient is φ = 122240042208.

The previous prime is 122240042179. The next prime is 122240042233. The reversal of 122240042209 is 902240042221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120198809809 + 2041232400 = 346697^2 + 45180^2 .

It is a cyclic number.

It is not a de Polignac number, because 122240042209 - 2¹¹ = 122240040161 is a prime.

It is not a weakly prime, because it can be changed into another prime (122240042009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61120021104 + 61120021105.

It is an arithmetic number, because the mean of its divisors is an integer number (61120021105).

Almost surely, 2^122240042209 is an apocalyptic number.

It is an amenable number.

122240042209 is a deficient number, since it is larger than the sum of its proper divisors (1).

122240042209 is an equidigital number, since it uses as much as digits as its factorization.

122240042209 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 28.

The spelling of 122240042209 in words is "one hundred twenty-two billion, two hundred forty million, forty-two thousand, two hundred nine".