122320399 has 2 divisors, whose sum is σ = 122320400. Its totient is φ = 122320398.

The previous prime is 122320391. The next prime is 122320403. The reversal of 122320399 is 993023221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122320399 - 2³ = 122320391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122320399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122320391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61160199 + 61160200.

It is an arithmetic number, because the mean of its divisors is an integer number (61160200).

Almost surely, 2^122320399 is an apocalyptic number.

122320399 is a deficient number, since it is larger than the sum of its proper divisors (1).

122320399 is an equidigital number, since it uses as much as digits as its factorization.

122320399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 122320399 is about 11059.8552883842. The cubic root of 122320399 is about 496.4013603901.

The spelling of 122320399 in words is "one hundred twenty-two million, three hundred twenty thousand, three hundred ninety-nine".