122567009 has 2 divisors, whose sum is σ = 122567010. Its totient is φ = 122567008.

The previous prime is 122566981. The next prime is 122567047. The reversal of 122567009 is 900765221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96963409 + 25603600 = 9847^2 + 5060^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122567009 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122567209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61283504 + 61283505.

It is an arithmetic number, because the mean of its divisors is an integer number (61283505).

Almost surely, 2^122567009 is an apocalyptic number.

It is an amenable number.

122567009 is a deficient number, since it is larger than the sum of its proper divisors (1).

122567009 is an equidigital number, since it uses as much as digits as its factorization.

122567009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 122567009 is about 11070.9985547827. The cubic root of 122567009 is about 496.7347345013.

Adding to 122567009 its sum of digits (32), we get a square (122567041 = 11071²).

The spelling of 122567009 in words is "one hundred twenty-two million, five hundred sixty-seven thousand, nine".