122022409 has 2 divisors, whose sum is σ = 122022410. Its totient is φ = 122022408.

The previous prime is 122022403. The next prime is 122022457. The reversal of 122022409 is 904220221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118200384 + 3822025 = 10872^2 + 1955^2 .

It is a cyclic number.

It is not a de Polignac number, because 122022409 - 2¹¹ = 122020361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122022409.

It is not a weakly prime, because it can be changed into another prime (122022403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61011204 + 61011205.

It is an arithmetic number, because the mean of its divisors is an integer number (61011205).

Almost surely, 2^122022409 is an apocalyptic number.

It is an amenable number.

122022409 is a deficient number, since it is larger than the sum of its proper divisors (1).

122022409 is an equidigital number, since it uses as much as digits as its factorization.

122022409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 122022409 is about 11046.3753783764. The cubic root of 122022409 is about 495.9979310202.

The spelling of 122022409 in words is "one hundred twenty-two million, twenty-two thousand, four hundred nine".