202222221222 has 128 divisors (see below), whose sum is σ = 480255519744. Its totient is φ = 55567669248.

The previous prime is 202222221211. The next prime is 202222221239. The reversal of 202222221222 is 222122222202.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 123531388 + ... + 123533024.

It is an arithmetic number, because the mean of its divisors is an integer number (3751996248).

Almost surely, 2^202222221222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202222221222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240127759872).

202222221222 is an abundant number, since it is smaller than the sum of its proper divisors (278033298522).

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

202222221222 is a wasteful number, since it uses less digits than its factorization.

202222221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2702.

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 202222221222 its reverse (222122222202), we get a palindrome (424344443424).

The spelling of 202222221222 in words is "two hundred two billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred twenty-two".