10002191 has 2 divisors, whose sum is σ = 10002192. Its totient is φ = 10002190.

The previous prime is 10002149. The next prime is 10002197. The reversal of 10002191 is 19120001.

It is a strong prime.

It is an emirp because it is prime and its reverse (19120001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10002191 - 2⁶ = 10002127 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10002197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5001095 + 5001096.

It is an arithmetic number, because the mean of its divisors is an integer number (5001096).

Almost surely, 2^10002191 is an apocalyptic number.

10002191 is a deficient number, since it is larger than the sum of its proper divisors (1).

10002191 is an equidigital number, since it uses as much as digits as its factorization.

10002191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 10002191 is about 3162.6240687126. The cubic root of 10002191 is about 215.4592024089.

Adding to 10002191 its reverse (19120001), we get a palindrome (29122192).

The spelling of 10002191 in words is "ten million, two thousand, one hundred ninety-one".