122255009 has 2 divisors, whose sum is σ = 122255010. Its totient is φ = 122255008.

The previous prime is 122254999. The next prime is 122255011. The reversal of 122255009 is 900552221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85008400 + 37246609 = 9220^2 + 6103^2 .

It is an emirp because it is prime and its reverse (900552221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122255009 is a prime.

Together with 122255011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122255059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61127504 + 61127505.

It is an arithmetic number, because the mean of its divisors is an integer number (61127505).

Almost surely, 2^122255009 is an apocalyptic number.

It is an amenable number.

122255009 is a deficient number, since it is larger than the sum of its proper divisors (1).

122255009 is an equidigital number, since it uses as much as digits as its factorization.

122255009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 122255009 is about 11056.8987062377. The cubic root of 122255009 is about 496.3128892628.

The spelling of 122255009 in words is "one hundred twenty-two million, two hundred fifty-five thousand, nine".