99101122789 has 2 divisors, whose sum is σ = 99101122790. Its totient is φ = 99101122788.

The previous prime is 99101122763. The next prime is 99101122819. The reversal of 99101122789 is 98722110199.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73125353889 + 25975768900 = 270417^2 + 161170^2 .

It is an emirp because it is prime and its reverse (98722110199) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99101122789 - 2¹⁵ = 99101090021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99101129789) 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, 49550561394 + 49550561395.

It is an arithmetic number, because the mean of its divisors is an integer number (49550561395).

Almost surely, 2^99101122789 is an apocalyptic number.

It is an amenable number.

99101122789 is a deficient number, since it is larger than the sum of its proper divisors (1).

99101122789 is an equidigital number, since it uses as much as digits as its factorization.

99101122789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 49.

The spelling of 99101122789 in words is "ninety-nine billion, one hundred one million, one hundred twenty-two thousand, seven hundred eighty-nine".