22204404437 has 2 divisors, whose sum is σ = 22204404438. Its totient is φ = 22204404436.

The previous prime is 22204404433. The next prime is 22204404449. The reversal of 22204404437 is 73440440222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21923540356 + 280864081 = 148066^2 + 16759^2 .

It is a cyclic number.

It is not a de Polignac number, because 22204404437 - 2² = 22204404433 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22204404433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11102202218 + 11102202219.

It is an arithmetic number, because the mean of its divisors is an integer number (11102202219).

Almost surely, 2^22204404437 is an apocalyptic number.

It is an amenable number.

22204404437 is a deficient number, since it is larger than the sum of its proper divisors (1).

22204404437 is an equidigital number, since it uses as much as digits as its factorization.

22204404437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43008, while the sum is 32.

Adding to 22204404437 its reverse (73440440222), we get a palindrome (95644844659).

The spelling of 22204404437 in words is "twenty-two billion, two hundred four million, four hundred four thousand, four hundred thirty-seven".