4111230821 has 2 divisors, whose sum is σ = 4111230822. Its totient is φ = 4111230820.

The previous prime is 4111230787. The next prime is 4111230901. The reversal of 4111230821 is 1280321114.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3683154721 + 428076100 = 60689^2 + 20690^2 .

It is a cyclic number.

It is not a de Polignac number, because 4111230821 - 2¹⁰ = 4111229797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4111230421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2055615410 + 2055615411.

It is an arithmetic number, because the mean of its divisors is an integer number (2055615411).

Almost surely, 2^4111230821 is an apocalyptic number.

It is an amenable number.

4111230821 is a deficient number, since it is larger than the sum of its proper divisors (1).

4111230821 is an equidigital number, since it uses as much as digits as its factorization.

4111230821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 4111230821 is about 64118.8803785593. The cubic root of 4111230821 is about 1601.9807267568.

Adding to 4111230821 its reverse (1280321114), we get a palindrome (5391551935).

The spelling of 4111230821 in words is "four billion, one hundred eleven million, two hundred thirty thousand, eight hundred twenty-one".