12001000073 has 2 divisors, whose sum is σ = 12001000074. Its totient is φ = 12001000072.

The previous prime is 12001000057. The next prime is 12001000093. The reversal of 12001000073 is 37000010021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6401920144 + 5599079929 = 80012^2 + 74827^2 .

It is a cyclic number.

It is not a de Polignac number, because 12001000073 - 2⁴ = 12001000057 is a prime.

It is not a weakly prime, because it can be changed into another prime (12001000003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000500036 + 6000500037.

It is an arithmetic number, because the mean of its divisors is an integer number (6000500037).

Almost surely, 2^12001000073 is an apocalyptic number.

It is an amenable number.

12001000073 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001000073 is an equidigital number, since it uses as much as digits as its factorization.

12001000073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42, while the sum is 14.

Adding to 12001000073 its reverse (37000010021), we get a palindrome (49001010094).

The spelling of 12001000073 in words is "twelve billion, one million, seventy-three", and thus it is an aban number and an uban number.