221411198 has 8 divisors (see below), whose sum is σ = 332260392. Its totient is φ = 110657736.

The previous prime is 221411191. The next prime is 221411221. The reversal of 221411198 is 891114122.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 221411198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221411191) 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, 17840 + ... + 27587.

It is an arithmetic number, because the mean of its divisors is an integer number (41532549).

Almost surely, 2^221411198 is an apocalyptic number.

221411198 is a deficient number, since it is larger than the sum of its proper divisors (110849194).

221411198 is a wasteful number, since it uses less digits than its factorization.

221411198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47866.

The product of its digits is 1152, while the sum is 29.

The square root of 221411198 is about 14879.8924055250. The cubic root of 221411198 is about 604.9691016253.

The spelling of 221411198 in words is "two hundred twenty-one million, four hundred eleven thousand, one hundred ninety-eight".