222221102022 has 64 divisors (see below), whose sum is σ = 503404957440. Its totient is φ = 72646409088.

The previous prime is 222221102011. The next prime is 222221102041. The reversal of 222221102022 is 220201122222.

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 = 222221101986 and 222221102004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 685998 + ... + 956574.

It is an arithmetic number, because the mean of its divisors is an integer number (7865702460).

Almost surely, 2^222221102022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222221102022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251702478720).

222221102022 is an abundant number, since it is smaller than the sum of its proper divisors (281183855418).

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

222221102022 is a wasteful number, since it uses less digits than its factorization.

222221102022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270882 (or 270876 counting only the distinct ones).

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

Adding to 222221102022 its reverse (220201122222), we get a palindrome (442422224244).

The spelling of 222221102022 in words is "two hundred twenty-two billion, two hundred twenty-one million, one hundred two thousand, twenty-two".