12870101 has 2 divisors, whose sum is σ = 12870102. Its totient is φ = 12870100.

The previous prime is 12870089. The next prime is 12870103. The reversal of 12870101 is 10107821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9891025 + 2979076 = 3145^2 + 1726^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12870101 is a prime.

It is a Sophie Germain prime.

Together with 12870103, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12870103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6435050 + 6435051.

It is an arithmetic number, because the mean of its divisors is an integer number (6435051).

Almost surely, 2^12870101 is an apocalyptic number.

It is an amenable number.

12870101 is a deficient number, since it is larger than the sum of its proper divisors (1).

12870101 is an equidigital number, since it uses as much as digits as its factorization.

12870101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 20.

The square root of 12870101 is about 3587.4922996433. The cubic root of 12870101 is about 234.3476763643.

Adding to 12870101 its reverse (10107821), we get a palindrome (22977922).

The spelling of 12870101 in words is "twelve million, eight hundred seventy thousand, one hundred one".