99218417197 has 2 divisors, whose sum is σ = 99218417198. Its totient is φ = 99218417196.

The previous prime is 99218417167. The next prime is 99218417203. The reversal of 99218417197 is 79171481299.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64722412836 + 34496004361 = 254406^2 + 185731^2 .

It is a cyclic number.

It is not a de Polignac number, because 99218417197 - 2¹⁹ = 99217892909 is a prime.

It is a super-2 number, since 2×99218417197² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99218417167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49609208598 + 49609208599.

It is an arithmetic number, because the mean of its divisors is an integer number (49609208599).

Almost surely, 2^99218417197 is an apocalyptic number.

It is an amenable number.

99218417197 is a deficient number, since it is larger than the sum of its proper divisors (1).

99218417197 is an equidigital number, since it uses as much as digits as its factorization.

99218417197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2286144, while the sum is 58.

The spelling of 99218417197 in words is "ninety-nine billion, two hundred eighteen million, four hundred seventeen thousand, one hundred ninety-seven".