10207121 has 2 divisors, whose sum is σ = 10207122. Its totient is φ = 10207120.

The previous prime is 10207081. The next prime is 10207139. The reversal of 10207121 is 12170201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9388096 + 819025 = 3064^2 + 905^2 .

It is an emirp because it is prime and its reverse (12170201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10207121 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10207096 and 10207105.

It is not a weakly prime, because it can be changed into another prime (10207151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5103560 + 5103561.

It is an arithmetic number, because the mean of its divisors is an integer number (5103561).

Almost surely, 2^10207121 is an apocalyptic number.

It is an amenable number.

10207121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10207121 is an equidigital number, since it uses as much as digits as its factorization.

10207121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 10207121 is about 3194.8585258193. The cubic root of 10207121 is about 216.9207451942.

Adding to 10207121 its reverse (12170201), we get a palindrome (22377322).

The spelling of 10207121 in words is "ten million, two hundred seven thousand, one hundred twenty-one".