221120219 has 2 divisors, whose sum is σ = 221120220. Its totient is φ = 221120218.

The previous prime is 221120197. The next prime is 221120231. The reversal of 221120219 is 912021122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221120219 - 2⁸ = 221119963 is a prime.

It is a super-2 number, since 2×221120219² = 97788302501215922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221120219.

It is not a weakly prime, because it can be changed into another prime (221120239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110560109 + 110560110.

It is an arithmetic number, because the mean of its divisors is an integer number (110560110).

Almost surely, 2^221120219 is an apocalyptic number.

221120219 is a deficient number, since it is larger than the sum of its proper divisors (1).

221120219 is an equidigital number, since it uses as much as digits as its factorization.

221120219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 221120219 is about 14870.1116001192. Note that the first 3 decimals coincide. The cubic root of 221120219 is about 604.7039682798.

The spelling of 221120219 in words is "two hundred twenty-one million, one hundred twenty thousand, two hundred nineteen".