22421804393 has 2 divisors, whose sum is σ = 22421804394. Its totient is φ = 22421804392.

The previous prime is 22421804387. The next prime is 22421804413. The reversal of 22421804393 is 39340812422.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12464159449 + 9957644944 = 111643^2 + 99788^2 .

It is a cyclic number.

It is not a de Polignac number, because 22421804393 - 2⁶ = 22421804329 is a prime.

It is not a weakly prime, because it can be changed into another prime (22421804303) 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, 11210902196 + 11210902197.

It is an arithmetic number, because the mean of its divisors is an integer number (11210902197).

Almost surely, 2^22421804393 is an apocalyptic number.

It is an amenable number.

22421804393 is a deficient number, since it is larger than the sum of its proper divisors (1).

22421804393 is an equidigital number, since it uses as much as digits as its factorization.

22421804393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 22421804393 in words is "twenty-two billion, four hundred twenty-one million, eight hundred four thousand, three hundred ninety-three".