442224410921 has 2 divisors, whose sum is σ = 442224410922. Its totient is φ = 442224410920.

The previous prime is 442224410917. The next prime is 442224411017. The reversal of 442224410921 is 129014422244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 317488298521 + 124736112400 = 563461^2 + 353180^2 .

It is a cyclic number.

It is not a de Polignac number, because 442224410921 - 2² = 442224410917 is a prime.

It is a super-2 number, since 2×442224410921² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (442224410911) 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, 221112205460 + 221112205461.

It is an arithmetic number, because the mean of its divisors is an integer number (221112205461).

Almost surely, 2^442224410921 is an apocalyptic number.

It is an amenable number.

442224410921 is a deficient number, since it is larger than the sum of its proper divisors (1).

442224410921 is an equidigital number, since it uses as much as digits as its factorization.

442224410921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36864, while the sum is 35.

The spelling of 442224410921 in words is "four hundred forty-two billion, two hundred twenty-four million, four hundred ten thousand, nine hundred twenty-one".