22224161 has 8 divisors (see below), whose sum is σ = 22948200. Its totient is φ = 21506688.

The previous prime is 22224149. The next prime is 22224203. The reversal of 22224161 is 16142222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9579025 + 12645136 = 3095^2 + 3556^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22224161 - 2¹⁰ = 22223137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22224131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5765 + ... + 8813.

It is an arithmetic number, because the mean of its divisors is an integer number (2868525).

Almost surely, 2^22224161 is an apocalyptic number.

It is an amenable number.

22224161 is a deficient number, since it is larger than the sum of its proper divisors (724039).

22224161 is a wasteful number, since it uses less digits than its factorization.

22224161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3283.

The product of its digits is 384, while the sum is 20.

The square root of 22224161 is about 4714.2508418624. The cubic root of 22224161 is about 281.1523976720.

Adding to 22224161 its reverse (16142222), we get a palindrome (38366383).

The spelling of 22224161 in words is "twenty-two million, two hundred twenty-four thousand, one hundred sixty-one".