22200022222 has 24 divisors (see below), whose sum is σ = 38783087280. Its totient is φ = 9502920000.

The previous prime is 22200022213. The next prime is 22200022277. The reversal of 22200022222 is 22222000222.

It is a happy number.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 22200022196 and 22200022205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52779 + ... + 217222.

It is an arithmetic number, because the mean of its divisors is an integer number (1615961970).

Almost surely, 2^22200022222 is an apocalyptic number.

22200022222 is a deficient number, since it is larger than the sum of its proper divisors (16583065058).

22200022222 is a wasteful number, since it uses less digits than its factorization.

22200022222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270856 (or 270849 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 22200022222 its reverse (22222000222), we get a palindrome (44422022444).

It can be divided in two parts, 222000222 and 22, that multiplied together give a palindrome (4884004884).

The spelling of 22200022222 in words is "twenty-two billion, two hundred million, twenty-two thousand, two hundred twenty-two".