122218539 has 8 divisors (see below), whose sum is σ = 164453520. Its totient is φ = 80731296.

The previous prime is 122218517. The next prime is 122218549. The reversal of 122218539 is 935812221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122218539 - 2¹⁵ = 122185771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122218549) 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 in 7 ways as a sum of consecutive naturals, for example, 186552 + ... + 187205.

It is an arithmetic number, because the mean of its divisors is an integer number (20556690).

Almost surely, 2^122218539 is an apocalyptic number.

122218539 is a deficient number, since it is larger than the sum of its proper divisors (42234981).

122218539 is a wasteful number, since it uses less digits than its factorization.

122218539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373869.

The product of its digits is 8640, while the sum is 33.

The square root of 122218539 is about 11055.2493866036. The cubic root of 122218539 is about 496.2635325087.

The spelling of 122218539 in words is "one hundred twenty-two million, two hundred eighteen thousand, five hundred thirty-nine".