22220220222 has 12 divisors (see below), whose sum is σ = 48143810520. Its totient is φ = 7406740068.

The previous prime is 22220220203. The next prime is 22220220229. The reversal of 22220220222 is 22202202222.

22220220222 is a `hidden beast` number, since 2 + 2 + 220 + 220 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1234456679 = 22220220222 / (2 + 2 + 2 + 2 + 0 + 2 + 2 + 0 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 22220220195 and 22220220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220220229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 617228322 + ... + 617228357.

It is an arithmetic number, because the mean of its divisors is an integer number (4011984210).

Almost surely, 2^22220220222 is an apocalyptic number.

22220220222 is an abundant number, since it is smaller than the sum of its proper divisors (25923590298).

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

22220220222 is a wasteful number, since it uses less digits than its factorization.

22220220222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234456687 (or 1234456684 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 22220220222 its reverse (22202202222), we get a palindrome (44422422444).

It can be divided in two parts, 2 and 2220220222, that multiplied together give a palindrome (4440440444).

The spelling of 22220220222 in words is "twenty-two billion, two hundred twenty million, two hundred twenty thousand, two hundred twenty-two".