4443112021 has 2 divisors, whose sum is σ = 4443112022. Its totient is φ = 4443112020.

The previous prime is 4443112001. The next prime is 4443112031. The reversal of 4443112021 is 1202113444.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3092916996 + 1350195025 = 55614^2 + 36745^2 .

It is a cyclic number.

It is not a de Polignac number, because 4443112021 - 2²⁵ = 4409557589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4443111983 and 4443112001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4443112001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2221556010 + 2221556011.

It is an arithmetic number, because the mean of its divisors is an integer number (2221556011).

Almost surely, 2^4443112021 is an apocalyptic number.

It is an amenable number.

4443112021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4443112021 is an equidigital number, since it uses as much as digits as its factorization.

4443112021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 4443112021 is about 66656.6727417443. The cubic root of 4443112021 is about 1643.9770645259.

Adding to 4443112021 its reverse (1202113444), we get a palindrome (5645225465).

The spelling of 4443112021 in words is "four billion, four hundred forty-three million, one hundred twelve thousand, twenty-one".