122018399 has 16 divisors (see below), whose sum is σ = 134784000. Its totient is φ = 110003040.

The previous prime is 122018389. The next prime is 122018441. The reversal of 122018399 is 993810221.

It is a cyclic number.

It is not a de Polignac number, because 122018399 - 2¹⁶ = 121952863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122018329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37562 + ... + 40680.

It is an arithmetic number, because the mean of its divisors is an integer number (8424000).

Almost surely, 2^122018399 is an apocalyptic number.

122018399 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

122018399 is a deficient number, since it is larger than the sum of its proper divisors (12765601).

122018399 is a wasteful number, since it uses less digits than its factorization.

122018399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3238.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 122018399 is about 11046.1938693832. The cubic root of 122018399 is about 495.9924976644.

The spelling of 122018399 in words is "one hundred twenty-two million, eighteen thousand, three hundred ninety-nine".