22144220447 has 2 divisors, whose sum is σ = 22144220448. Its totient is φ = 22144220446.

The previous prime is 22144220401. The next prime is 22144220467. The reversal of 22144220447 is 74402244122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22144220447 - 2⁸ = 22144220191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22144220467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11072110223 + 11072110224.

It is an arithmetic number, because the mean of its divisors is an integer number (11072110224).

Almost surely, 2^22144220447 is an apocalyptic number.

22144220447 is a deficient number, since it is larger than the sum of its proper divisors (1).

22144220447 is an equidigital number, since it uses as much as digits as its factorization.

22144220447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28672, while the sum is 32.

Adding to 22144220447 its reverse (74402244122), we get a palindrome (96546464569).

The spelling of 22144220447 in words is "twenty-two billion, one hundred forty-four million, two hundred twenty thousand, four hundred forty-seven".