22044414421 has 2 divisors, whose sum is σ = 22044414422. Its totient is φ = 22044414420.

The previous prime is 22044414389. The next prime is 22044414449. The reversal of 22044414421 is 12441444022.

It is a happy number.

It is an a-pointer prime, because the next prime (22044414449) can be obtained adding 22044414421 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21393450225 + 650964196 = 146265^2 + 25514^2 .

It is a cyclic number.

It is not a de Polignac number, because 22044414421 - 2⁵ = 22044414389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22044414421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22044414451) 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, 11022207210 + 11022207211.

It is an arithmetic number, because the mean of its divisors is an integer number (11022207211).

Almost surely, 2^22044414421 is an apocalyptic number.

It is an amenable number.

22044414421 is a deficient number, since it is larger than the sum of its proper divisors (1).

22044414421 is an equidigital number, since it uses as much as digits as its factorization.

22044414421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 22044414421 its reverse (12441444022), we get a palindrome (34485858443).

The spelling of 22044414421 in words is "twenty-two billion, forty-four million, four hundred fourteen thousand, four hundred twenty-one".