100122218 has 16 divisors (see below), whose sum is σ = 172601280. Its totient is φ = 42668736.

The previous prime is 100122179. The next prime is 100122221. The reversal of 100122218 is 812221001.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100122196 and 100122205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17471 + ... + 22482.

It is an arithmetic number, because the mean of its divisors is an integer number (10787580).

Almost surely, 2^100122218 is an apocalyptic number.

100122218 is a deficient number, since it is larger than the sum of its proper divisors (72479062).

100122218 is a wasteful number, since it uses less digits than its factorization.

100122218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40141.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 100122218 is about 10006.1090339852. The cubic root of 100122218 is about 464.3479016121.

Adding to 100122218 its reverse (812221001), we get a palindrome (912343219).

The spelling of 100122218 in words is "one hundred million, one hundred twenty-two thousand, two hundred eighteen".