12000199969 has 2 divisors, whose sum is σ = 12000199970. Its totient is φ = 12000199968.

The previous prime is 12000199963. The next prime is 12000199979. The reversal of 12000199969 is 96999100021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6119150625 + 5881049344 = 78225^2 + 76688^2 .

It is a cyclic number.

It is not a de Polignac number, because 12000199969 - 2¹¹ = 12000197921 is a prime.

It is a super-2 number, since 2×12000199969² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12000199963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000099984 + 6000099985.

It is an arithmetic number, because the mean of its divisors is an integer number (6000099985).

Almost surely, 2^12000199969 is an apocalyptic number.

It is an amenable number.

12000199969 is a deficient number, since it is larger than the sum of its proper divisors (1).

12000199969 is an equidigital number, since it uses as much as digits as its factorization.

12000199969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 78732, while the sum is 46.

The spelling of 12000199969 in words is "twelve billion, one hundred ninety-nine thousand, nine hundred sixty-nine".