102122198 has 4 divisors (see below), whose sum is σ = 153183300. Its totient is φ = 51061098.

The previous prime is 102122177. The next prime is 102122201. The reversal of 102122198 is 891221201.

It is a semiprime because it is the product of two primes.

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, 25530548 + ... + 25530551.

It is an arithmetic number, because the mean of its divisors is an integer number (38295825).

Almost surely, 2^102122198 is an apocalyptic number.

102122198 is a deficient number, since it is larger than the sum of its proper divisors (51061102).

102122198 is an equidigital number, since it uses as much as digits as its factorization.

102122198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51061101.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 102122198 is about 10105.5528300039. The cubic root of 102122198 is about 467.4193830887.

Adding to 102122198 its reverse (891221201), we get a palindrome (993343399).

The spelling of 102122198 in words is "one hundred two million, one hundred twenty-two thousand, one hundred ninety-eight".