221140219 has 4 divisors (see below), whose sum is σ = 221214240. Its totient is φ = 221066200.

The previous prime is 221140187. The next prime is 221140223. The reversal of 221140219 is 912041122.

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

It is a cyclic number.

It is not a de Polignac number, because 221140219 - 2⁵ = 221140187 is a prime.

It is a super-2 number, since 2×221140219² = 97805992918735922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221140219.

It is not an unprimeable number, because it can be changed into a prime (221140289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32332 + ... + 38569.

It is an arithmetic number, because the mean of its divisors is an integer number (55303560).

Almost surely, 2^221140219 is an apocalyptic number.

221140219 is a deficient number, since it is larger than the sum of its proper divisors (74021).

221140219 is an equidigital number, since it uses as much as digits as its factorization.

221140219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74020.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 221140219 is about 14870.7840748227. The cubic root of 221140219 is about 604.7221992596.

The spelling of 221140219 in words is "two hundred twenty-one million, one hundred forty thousand, two hundred nineteen".