99193112221 has 8 divisors (see below), whose sum is σ = 115677099200. Its totient is φ = 85022667324.

The previous prime is 99193112189. The next prime is 99193112257. The reversal of 99193112221 is 12221139199.

It is not a de Polignac number, because 99193112221 - 2⁵ = 99193112189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99193112281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144596031 + ... + 144596716.

It is an arithmetic number, because the mean of its divisors is an integer number (14459637400).

Almost surely, 2^99193112221 is an apocalyptic number.

It is an amenable number.

99193112221 is a deficient number, since it is larger than the sum of its proper divisors (16483986979).

99193112221 is an equidigital number, since it uses as much as digits as its factorization.

99193112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289192768 (or 289192754 counting only the distinct ones).

The product of its digits is 17496, while the sum is 40.

The spelling of 99193112221 in words is "ninety-nine billion, one hundred ninety-three million, one hundred twelve thousand, two hundred twenty-one".