102111218 has 16 divisors (see below), whose sum is σ = 167793120. Its totient is φ = 46219200.

The previous prime is 102111203. The next prime is 102111239. The reversal of 102111218 is 812111201.

It is a junction number, because it is equal to n+sod(n) for n = 102111196 and 102111205.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4328 + ... + 14931.

It is an arithmetic number, because the mean of its divisors is an integer number (10487070).

Almost surely, 2^102111218 is an apocalyptic number.

102111218 is a deficient number, since it is larger than the sum of its proper divisors (65681902).

102111218 is a wasteful number, since it uses less digits than its factorization.

102111218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19513.

The product of its (nonzero) digits is 32, while the sum is 17.

The square root of 102111218 is about 10105.0095497233. The cubic root of 102111218 is about 467.4026304503.

Subtracting from 102111218 its sum of digits (17), we obtain a palindrome (102111201).

Adding to 102111218 its reverse (812111201), we get a palindrome (914222419).

The spelling of 102111218 in words is "one hundred two million, one hundred eleven thousand, two hundred eighteen".