22222224444447 has 24 divisors (see below), whose sum is σ = 32487349225968. Its totient is φ = 14635491724800.

The previous prime is 22222224444443. The next prime is 22222224444461. The reversal of 22222224444447 is 74444442222222.

It is not a de Polignac number, because 22222224444447 - 2² = 22222224444443 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222224444443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12429997 + ... + 14104937.

It is an arithmetic number, because the mean of its divisors is an integer number (1353639551082).

Almost surely, 2^{22222224444447} is an apocalyptic number.

22222224444447 is a deficient number, since it is larger than the sum of its proper divisors (10265124781521).

22222224444447 is a wasteful number, since it uses less digits than its factorization.

22222224444447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692791 (or 1692788 counting only the distinct ones).

The product of its digits is 3670016, while the sum is 45.

Adding to 22222224444447 its reverse (74444442222222), we get a palindrome (96666666666669).

The spelling of 22222224444447 in words is "twenty-two trillion, two hundred twenty-two billion, two hundred twenty-four million, four hundred forty-four thousand, four hundred forty-seven".