99218219 has 2 divisors, whose sum is σ = 99218220. Its totient is φ = 99218218.

The previous prime is 99218177. The next prime is 99218299. The reversal of 99218219 is 91281299.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99218219 is a prime.

It is a super-2 number, since 2×99218219² = 19688509963063922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99218299) 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 as a sum of consecutive naturals, namely, 49609109 + 49609110.

It is an arithmetic number, because the mean of its divisors is an integer number (49609110).

Almost surely, 2^99218219 is an apocalyptic number.

99218219 is a deficient number, since it is larger than the sum of its proper divisors (1).

99218219 is an equidigital number, since it uses as much as digits as its factorization.

99218219 is an odious number, because the sum of its binary digits is odd.

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

The square root of 99218219 is about 9960.8342522100. The cubic root of 99218219 is about 462.9461488868.

The spelling of 99218219 in words is "ninety-nine million, two hundred eighteen thousand, two hundred nineteen".