10186021 has 2 divisors, whose sum is σ = 10186022. Its totient is φ = 10186020.

The previous prime is 10186013. The next prime is 10186027. The reversal of 10186021 is 12068101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6305121 + 3880900 = 2511^2 + 1970^2 .

It is an emirp because it is prime and its reverse (12068101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10186021 - 2³ = 10186013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10186021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10186027) 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, 5093010 + 5093011.

It is an arithmetic number, because the mean of its divisors is an integer number (5093011).

Almost surely, 2^10186021 is an apocalyptic number.

It is an amenable number.

10186021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10186021 is an equidigital number, since it uses as much as digits as its factorization.

10186021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 10186021 is about 3191.5546368502. The cubic root of 10186021 is about 216.7711703630.

The spelling of 10186021 in words is "ten million, one hundred eighty-six thousand, twenty-one".