221102198 has 8 divisors (see below), whose sum is σ = 335851680. Its totient is φ = 109151640.

The previous prime is 221102191. The next prime is 221102213. The reversal of 221102198 is 891201122.

221102198 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221102191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 699533 + ... + 699848.

It is an arithmetic number, because the mean of its divisors is an integer number (41981460).

Almost surely, 2^221102198 is an apocalyptic number.

221102198 is a deficient number, since it is larger than the sum of its proper divisors (114749482).

221102198 is a wasteful number, since it uses less digits than its factorization.

221102198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399462.

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

The square root of 221102198 is about 14869.5056407400. The cubic root of 221102198 is about 604.6875403139.

The spelling of 221102198 in words is "two hundred twenty-one million, one hundred two thousand, one hundred ninety-eight".