12001000057 has 2 divisors, whose sum is σ = 12001000058. Its totient is φ = 12001000056.

The previous prime is 12001000049. The next prime is 12001000073. The reversal of 12001000057 is 75000010021.

It is an a-pointer prime, because the next prime (12001000073) can be obtained adding 12001000057 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11556465001 + 444535056 = 107501^2 + 21084^2 .

It is a cyclic number.

It is not a de Polignac number, because 12001000057 - 2³ = 12001000049 is a prime.

It is a super-2 number, since 2×12001000057² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12001000057.

It is not a weakly prime, because it can be changed into another prime (12001000097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000500028 + 6000500029.

It is an arithmetic number, because the mean of its divisors is an integer number (6000500029).

Almost surely, 2^12001000057 is an apocalyptic number.

It is an amenable number.

12001000057 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001000057 is an equidigital number, since it uses as much as digits as its factorization.

12001000057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70, while the sum is 16.

Adding to 12001000057 its reverse (75000010021), we get a palindrome (87001010078).

The spelling of 12001000057 in words is "twelve billion, one million, fifty-seven", and thus it is an aban number and an uban number.