4320010021 has 2 divisors, whose sum is σ = 4320010022. Its totient is φ = 4320010020.

The previous prime is 4320010003. The next prime is 4320010039. The reversal of 4320010021 is 1200100234.

It is a balanced prime because it is at equal distance from previous prime (4320010003) and next prime (4320010039).

It can be written as a sum of positive squares in only one way, i.e., 4281084900 + 38925121 = 65430^2 + 6239^2 .

It is a cyclic number.

It is not a de Polignac number, because 4320010021 - 2¹⁹ = 4319485733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4320009983 and 4320010010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4320010061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2160005010 + 2160005011.

It is an arithmetic number, because the mean of its divisors is an integer number (2160005011).

Almost surely, 2^4320010021 is an apocalyptic number.

It is an amenable number.

4320010021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4320010021 is an equidigital number, since it uses as much as digits as its factorization.

4320010021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 4320010021 is about 65726.7831329056. The cubic root of 4320010021 is about 1628.6518292698.

Adding to 4320010021 its reverse (1200100234), we get a palindrome (5520110255).

The spelling of 4320010021 in words is "four billion, three hundred twenty million, ten thousand, twenty-one".