102112198 has 4 divisors (see below), whose sum is σ = 153168300. Its totient is φ = 51056098.

The previous prime is 102112189. The next prime is 102112207. The reversal of 102112198 is 891211201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 891211201 = 89 ⋅10013609.

It is an interprime number because it is at equal distance from previous prime (102112189) and next prime (102112207).

It is a congruent number.

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 as a sum of consecutive naturals, namely, 25528048 + ... + 25528051.

It is an arithmetic number, because the mean of its divisors is an integer number (38292075).

Almost surely, 2^102112198 is an apocalyptic number.

102112198 is a deficient number, since it is larger than the sum of its proper divisors (51056102).

102112198 is an equidigital number, since it uses as much as digits as its factorization.

102112198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51056101.

The product of its (nonzero) digits is 288, while the sum is 25.

The square root of 102112198 is about 10105.0580404073. The cubic root of 102112198 is about 467.4041257255.

Adding to 102112198 its reverse (891211201), we get a palindrome (993323399).

The spelling of 102112198 in words is "one hundred two million, one hundred twelve thousand, one hundred ninety-eight".