102005218 has 16 divisors (see below), whose sum is σ = 177831360. Its totient is φ = 42975216.

The previous prime is 102005191. The next prime is 102005261. The reversal of 102005218 is 812500201.

It is a junction number, because it is equal to n+sod(n) for n = 102005195 and 102005204.

It is an unprimeable number.

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, 60921 + ... + 62572.

It is an arithmetic number, because the mean of its divisors is an integer number (11114460).

Almost surely, 2^102005218 is an apocalyptic number.

102005218 is a deficient number, since it is larger than the sum of its proper divisors (75826142).

102005218 is a wasteful number, since it uses less digits than its factorization.

102005218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123561.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 102005218 is about 10099.7632645523. The cubic root of 102005218 is about 467.2408400890.

Adding to 102005218 its reverse (812500201), we get a palindrome (914505419).

The spelling of 102005218 in words is "one hundred two million, five thousand, two hundred eighteen".