22222222447 has 2 divisors, whose sum is σ = 22222222448. Its totient is φ = 22222222446.

The previous prime is 22222222441. The next prime is 22222222493. The reversal of 22222222447 is 74422222222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22222222447 - 2¹¹ = 22222220399 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22222222441) 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, 11111111223 + 11111111224.

It is an arithmetic number, because the mean of its divisors is an integer number (11111111224).

Almost surely, 2^22222222447 is an apocalyptic number.

22222222447 is a deficient number, since it is larger than the sum of its proper divisors (1).

22222222447 is an equidigital number, since it uses as much as digits as its factorization.

22222222447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28672, while the sum is 31.

Adding to 22222222447 its reverse (74422222222), we get a palindrome (96644444669).

The spelling of 22222222447 in words is "twenty-two billion, two hundred twenty-two million, two hundred twenty-two thousand, four hundred forty-seven".