9999900199199 has 2 divisors, whose sum is σ = 9999900199200. Its totient is φ = 9999900199198.

The previous prime is 9999900199117. The next prime is 9999900199243. The reversal of 9999900199199 is 9919910099999.

9999900199199 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9999900199199 - 2⁸ = 9999900198943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9999900199999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999950099599 + 4999950099600.

It is an arithmetic number, because the mean of its divisors is an integer number (4999950099600).

Almost surely, 2^{9999900199199} is an apocalyptic number.

9999900199199 is a deficient number, since it is larger than the sum of its proper divisors (1).

9999900199199 is an equidigital number, since it uses as much as digits as its factorization.

9999900199199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387420489, while the sum is 83.

The spelling of 9999900199199 in words is "nine trillion, nine hundred ninety-nine billion, nine hundred million, one hundred ninety-nine thousand, one hundred ninety-nine".