102118 has 4 divisors (see below), whose sum is σ = 153180. Its totient is φ = 51058.

The previous prime is 102107. The next prime is 102121. The reversal of 102118 is 811201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 811201 = 547 ⋅1483.

It is a junction number, because it is equal to n+sod(n) for n = 102098 and 102107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25528 + ... + 25531.

It is an arithmetic number, because the mean of its divisors is an integer number (38295).

2¹⁰²¹¹⁸ is an apocalyptic number.

102118 is a deficient number, since it is larger than the sum of its proper divisors (51062).

102118 is an equidigital number, since it uses as much as digits as its factorization.

102118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51061.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 102118 is about 319.5590712216. The cubic root of 102118 is about 46.7412978169.

Adding to 102118 its reverse (811201), we get a palindrome (913319).

The spelling of 102118 in words is "one hundred two thousand, one hundred eighteen".