12000999969 has 24 divisors (see below), whose sum is σ = 19829026880. Its totient is φ = 6851534688.

The previous prime is 12000999949. The next prime is 12000999973. The reversal of 12000999969 is 96999900021.

It is a happy number.

It is not a de Polignac number, because 12000999969 - 2⁷ = 12000999841 is a prime.

It is a super-2 number, since 2×12000999969² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12000999929) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14899 + ... + 155640.

Almost surely, 2^12000999969 is an apocalyptic number.

It is an amenable number.

12000999969 is a deficient number, since it is larger than the sum of its proper divisors (7828026911).

12000999969 is a wasteful number, since it uses less digits than its factorization.

12000999969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171669 (or 171666 counting only the distinct ones).

The product of its (nonzero) digits is 708588, while the sum is 54.

The spelling of 12000999969 in words is "twelve billion, nine hundred ninety-nine thousand, nine hundred sixty-nine".