4422257921 has 2 divisors, whose sum is σ = 4422257922. Its totient is φ = 4422257920.

The previous prime is 4422257897. The next prime is 4422257927. The reversal of 4422257921 is 1297522244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4422250000 + 7921 = 66500^2 + 89^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4422257921 is a prime.

It is not a weakly prime, because it can be changed into another prime (4422257927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2211128960 + 2211128961.

It is an arithmetic number, because the mean of its divisors is an integer number (2211128961).

Almost surely, 2^4422257921 is an apocalyptic number.

It is an amenable number.

4422257921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4422257921 is an equidigital number, since it uses as much as digits as its factorization.

4422257921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 38.

The square root of 4422257921 is about 66500.0595563643. The cubic root of 4422257921 is about 1641.4009842215.

It can be divided in two parts, 442225 and 7921, that multiplied together give a square (3502864225 = 59185²).

The spelling of 4422257921 in words is "four billion, four hundred twenty-two million, two hundred fifty-seven thousand, nine hundred twenty-one".