219899201 has 2 divisors, whose sum is σ = 219899202. Its totient is φ = 219899200.

The previous prime is 219899191. The next prime is 219899203. The reversal of 219899201 is 102998912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219750976 + 148225 = 14824^2 + 385^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-219899201 is a prime.

Together with 219899203, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (219899203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109949600 + 109949601.

It is an arithmetic number, because the mean of its divisors is an integer number (109949601).

Almost surely, 2^219899201 is an apocalyptic number.

It is an amenable number.

219899201 is a deficient number, since it is larger than the sum of its proper divisors (1).

219899201 is an equidigital number, since it uses as much as digits as its factorization.

219899201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 41.

The square root of 219899201 is about 14828.9986512913. The cubic root of 219899201 is about 603.5888619459.

The spelling of 219899201 in words is "two hundred nineteen million, eight hundred ninety-nine thousand, two hundred one".