9999122312 has 16 divisors (see below), whose sum is σ = 19205631900. Its totient is φ = 4877620480.

The previous prime is 9999122293. The next prime is 9999122359. The reversal of 9999122312 is 2132219999.

It can be written as a sum of positive squares in 2 ways, for example, as 8575871236 + 1423251076 = 92606^2 + 37726^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15242237 + ... + 15242892.

Almost surely, 2^9999122312 is an apocalyptic number.

It is an amenable number.

9999122312 is a deficient number, since it is larger than the sum of its proper divisors (9206509588).

9999122312 is a wasteful number, since it uses less digits than its factorization.

9999122312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30485176 (or 30485172 counting only the distinct ones).

The product of its digits is 157464, while the sum is 47.

The square root of 9999122312 is about 99995.6114637037. The cubic root of 9999122312 is about 2154.3716574719.

The spelling of 9999122312 in words is "nine billion, nine hundred ninety-nine million, one hundred twenty-two thousand, three hundred twelve".