10195021 has 2 divisors, whose sum is σ = 10195022. Its totient is φ = 10195020.

The previous prime is 10194997. The next prime is 10195033. The reversal of 10195021 is 12059101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7590025 + 2604996 = 2755^2 + 1614^2 .

It is an emirp because it is prime and its reverse (12059101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10195021 - 2¹⁵ = 10162253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10195021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10195051) 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, 5097510 + 5097511.

It is an arithmetic number, because the mean of its divisors is an integer number (5097511).

Almost surely, 2^10195021 is an apocalyptic number.

It is an amenable number.

10195021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10195021 is an equidigital number, since it uses as much as digits as its factorization.

10195021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 19.

The square root of 10195021 is about 3192.9642966999. The cubic root of 10195021 is about 216.8349952926.

The spelling of 10195021 in words is "ten million, one hundred ninety-five thousand, twenty-one".