9991012302122 has 8 divisors (see below), whose sum is σ = 15141018643716. Its totient is φ = 4944006087552.

The previous prime is 9991012302097. The next prime is 9991012302127. The reversal of 9991012302122 is 2212032101999.

It can be written as a sum of positive squares in 2 ways, for example, as 9669556187281 + 321456114841 = 3109591^2 + 566971^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 9991012302122.

It is not an unprimeable number, because it can be changed into a prime (9991012302127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25750031513 + ... + 25750031900.

Almost surely, 2^{9991012302122} is an apocalyptic number.

9991012302122 is a deficient number, since it is larger than the sum of its proper divisors (5150006341594).

9991012302122 is a wasteful number, since it uses less digits than its factorization.

9991012302122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51500063512.

The product of its (nonzero) digits is 34992, while the sum is 41.

The spelling of 9991012302122 in words is "nine trillion, nine hundred ninety-one billion, twelve million, three hundred two thousand, one hundred twenty-two".