4445004121 has 2 divisors, whose sum is σ = 4445004122. Its totient is φ = 4445004120.

The previous prime is 4445004119. The next prime is 4445004131. The reversal of 4445004121 is 1214005444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2348371600 + 2096632521 = 48460^2 + 45789^2 .

It is a cyclic number.

It is not a de Polignac number, because 4445004121 - 2¹ = 4445004119 is a prime.

Together with 4445004119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4445004101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2222502060 + 2222502061.

It is an arithmetic number, because the mean of its divisors is an integer number (2222502061).

Almost surely, 2^4445004121 is an apocalyptic number.

It is an amenable number.

4445004121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4445004121 is an equidigital number, since it uses as much as digits as its factorization.

4445004121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 4445004121 is about 66670.8641086944. The cubic root of 4445004121 is about 1644.2103940442.

Adding to 4445004121 its reverse (1214005444), we get a palindrome (5659009565).

The spelling of 4445004121 in words is "four billion, four hundred forty-five million, four thousand, one hundred twenty-one".