22044242237 has 2 divisors, whose sum is σ = 22044242238. Its totient is φ = 22044242236.

The previous prime is 22044242191. The next prime is 22044242273. The reversal of 22044242237 is 73224244022.

Together with next prime (22044242273) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20378704516 + 1665537721 = 142754^2 + 40811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22044242237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22044242137) 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, 11022121118 + 11022121119.

It is an arithmetic number, because the mean of its divisors is an integer number (11022121119).

Almost surely, 2^22044242237 is an apocalyptic number.

It is an amenable number.

22044242237 is a deficient number, since it is larger than the sum of its proper divisors (1).

22044242237 is an equidigital number, since it uses as much as digits as its factorization.

22044242237 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 22044242237 its reverse (73224244022), we get a palindrome (95268486259).

The spelling of 22044242237 in words is "twenty-two billion, forty-four million, two hundred forty-two thousand, two hundred thirty-seven".