22221202222 has 16 divisors (see below), whose sum is σ = 34354271952. Its totient is φ = 10773103680.

The previous prime is 22221202219. The next prime is 22221202229. The reversal of 22221202222 is 22220212222.

It is a self number, because there is not a number n which added to its sum of digits gives 22221202222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221202229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 817893 + ... + 844624.

It is an arithmetic number, because the mean of its divisors is an integer number (2147141997).

Almost surely, 2^22221202222 is an apocalyptic number.

22221202222 is a deficient number, since it is larger than the sum of its proper divisors (12133069730).

22221202222 is a wasteful number, since it uses less digits than its factorization.

22221202222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662723.

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 22221202222 its reverse (22220212222), we get a palindrome (44441414444).

The spelling of 22221202222 in words is "twenty-two billion, two hundred twenty-one million, two hundred two thousand, two hundred twenty-two".