22221210222 has 16 divisors (see below), whose sum is σ = 49380467280. Its totient is φ = 7407070056.

The previous prime is 22221210203. The next prime is 22221210259. The reversal of 22221210222 is 22201212222.

22221210222 is a `hidden beast` number, since 222 + 212 + 10 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22221210195 and 22221210204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205751893 + ... + 205752000.

It is an arithmetic number, because the mean of its divisors is an integer number (3086279205).

Almost surely, 2^22221210222 is an apocalyptic number.

22221210222 is an abundant number, since it is smaller than the sum of its proper divisors (27159257058).

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

22221210222 is a wasteful number, since it uses less digits than its factorization.

22221210222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411503904 (or 411503898 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22221210222 its reverse (22201212222), we get a palindrome (44422422444).

The spelling of 22221210222 in words is "twenty-two billion, two hundred twenty-one million, two hundred ten thousand, two hundred twenty-two".