122218415 has 16 divisors (see below), whose sum is σ = 161225856. Its totient is φ = 88202400.

The previous prime is 122218403. The next prime is 122218433. The reversal of 122218415 is 514812221.

It is not a de Polignac number, because 122218415 - 2¹⁰ = 122217391 is a prime.

It is a super-2 number, since 2×122218415² = 29874681930224450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 1277 + ... + 15686.

It is an arithmetic number, because the mean of its divisors is an integer number (10076616).

Almost surely, 2^122218415 is an apocalyptic number.

122218415 is a deficient number, since it is larger than the sum of its proper divisors (39007441).

122218415 is a wasteful number, since it uses less digits than its factorization.

122218415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17110.

The product of its digits is 1280, while the sum is 26.

The square root of 122218415 is about 11055.2437784067. The cubic root of 122218415 is about 496.2633646763.

The spelling of 122218415 in words is "one hundred twenty-two million, two hundred eighteen thousand, four hundred fifteen".