22224122212 has 6 divisors (see below), whose sum is σ = 38892213878. Its totient is φ = 11112061104.

The previous prime is 22224122171. The next prime is 22224122213. The reversal of 22224122212 is 21222142222.

It can be written as a sum of positive squares in only one way, i.e., 16492723776 + 5731398436 = 128424^2 + 75706^2 .

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (22224122213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2778015273 + ... + 2778015280.

Almost surely, 2^22224122212 is an apocalyptic number.

It is an amenable number.

22224122212 is a deficient number, since it is larger than the sum of its proper divisors (16668091666).

22224122212 is a wasteful number, since it uses less digits than its factorization.

22224122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5556030557 (or 5556030555 counting only the distinct ones).

The product of its digits is 1024, while the sum is 22.

Adding to 22224122212 its reverse (21222142222), we get a palindrome (43446264434).

The spelling of 22224122212 in words is "twenty-two billion, two hundred twenty-four million, one hundred twenty-two thousand, two hundred twelve".