221828195 has 8 divisors (see below), whose sum is σ = 268226640. Its totient is φ = 176107360.

The previous prime is 221828183. The next prime is 221828197. The reversal of 221828195 is 591828122.

221828195 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 not a de Polignac number, because 221828195 - 2⁴ = 221828179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221828197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168680 + ... + 169989.

It is an arithmetic number, because the mean of its divisors is an integer number (33528330).

Almost surely, 2^221828195 is an apocalyptic number.

221828195 is a deficient number, since it is larger than the sum of its proper divisors (46398445).

221828195 is a wasteful number, since it uses less digits than its factorization.

221828195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338805.

The product of its digits is 23040, while the sum is 38.

The square root of 221828195 is about 14893.8979115610. The cubic root of 221828195 is about 605.3486549877.

The spelling of 221828195 in words is "two hundred twenty-one million, eight hundred twenty-eight thousand, one hundred ninety-five".