22011222224 has 10 divisors (see below), whose sum is σ = 42646743090. Its totient is φ = 11005611104.

The previous prime is 22011222223. The next prime is 22011222229. The reversal of 22011222224 is 42222211022.

It can be written as a sum of positive squares in only one way, i.e., 17418720400 + 4592501824 = 131980^2 + 67768^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22011222196 and 22011222205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011222223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687850679 + ... + 687850710.

It is an arithmetic number, because the mean of its divisors is an integer number (4264674309).

Almost surely, 2^22011222224 is an apocalyptic number.

It is an amenable number.

22011222224 is a deficient number, since it is larger than the sum of its proper divisors (20635520866).

22011222224 is a wasteful number, since it uses less digits than its factorization.

22011222224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375701397 (or 1375701391 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 22011222224 its reverse (42222211022), we get a palindrome (64233433246).

The spelling of 22011222224 in words is "twenty-two billion, eleven million, two hundred twenty-two thousand, two hundred twenty-four".