12700001 has 2 divisors, whose sum is σ = 12700002. Its totient is φ = 12700000.

The previous prime is 12699997. The next prime is 12700021. The reversal of 12700001 is 10000721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9891025 + 2808976 = 3145^2 + 1676^2 .

It is an emirp because it is prime and its reverse (10000721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12700001 - 2² = 12699997 is a prime.

It is a super-2 number, since 2×12700001² = 322580050800002, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12700021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6350000 + 6350001.

It is an arithmetic number, because the mean of its divisors is an integer number (6350001).

Almost surely, 2^12700001 is an apocalyptic number.

It is an amenable number.

12700001 is a deficient number, since it is larger than the sum of its proper divisors (1).

12700001 is an equidigital number, since it uses as much as digits as its factorization.

12700001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14, while the sum is 11.

The square root of 12700001 is about 3563.7060765445. The cubic root of 12700001 is about 233.3106615160.

Adding to 12700001 its reverse (10000721), we get a palindrome (22700722).

The spelling of 12700001 in words is "twelve million, seven hundred thousand, one".