22161441224 has 32 divisors (see below), whose sum is σ = 44756536440. Its totient is φ = 10226649600.

The previous prime is 22161441221. The next prime is 22161441283. The reversal of 22161441224 is 42214416122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 16907800900 + 5253640324 = 130030^2 + 72482^2 .

It is a super-2 number, since 2×22161441224² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22161441221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 778604 + ... + 806564.

Almost surely, 2^22161441224 is an apocalyptic number.

It is an amenable number.

22161441224 is an abundant number, since it is smaller than the sum of its proper divisors (22595095216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22161441224 is a wasteful number, since it uses less digits than its factorization.

22161441224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35601 (or 35597 counting only the distinct ones).

The product of its digits is 6144, while the sum is 29.

Adding to 22161441224 its reverse (42214416122), we get a palindrome (64375857346).

The spelling of 22161441224 in words is "twenty-two billion, one hundred sixty-one million, four hundred forty-one thousand, two hundred twenty-four".