123218218 has 8 divisors (see below), whose sum is σ = 186157440. Its totient is φ = 61165740.

The previous prime is 123218209. The next prime is 123218257. The reversal of 123218218 is 812812321.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221338 + ... + 221893.

It is an arithmetic number, because the mean of its divisors is an integer number (23269680).

Almost surely, 2^123218218 is an apocalyptic number.

123218218 is a deficient number, since it is larger than the sum of its proper divisors (62939222).

123218218 is a wasteful number, since it uses less digits than its factorization.

123218218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443372.

The product of its digits is 1536, while the sum is 28.

The square root of 123218218 is about 11100.3701740077. The cubic root of 123218218 is about 497.6129124286.

The spelling of 123218218 in words is "one hundred twenty-three million, two hundred eighteen thousand, two hundred eighteen".