12000999973 has 2 divisors, whose sum is σ = 12000999974. Its totient is φ = 12000999972.

The previous prime is 12000999949. The next prime is 12001000003. The reversal of 12000999973 is 37999900021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11365052449 + 635947524 = 106607^2 + 25218^2 .

It is a cyclic number.

It is not a de Polignac number, because 12000999973 - 2³³ = 3411065381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12000949973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000499986 + 6000499987.

It is an arithmetic number, because the mean of its divisors is an integer number (6000499987).

Almost surely, 2^12000999973 is an apocalyptic number.

It is an amenable number.

12000999973 is a deficient number, since it is larger than the sum of its proper divisors (1).

12000999973 is an equidigital number, since it uses as much as digits as its factorization.

12000999973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 275562, while the sum is 49.

The spelling of 12000999973 in words is "twelve billion, nine hundred ninety-nine thousand, nine hundred seventy-three".