202221222 has 64 divisors (see below), whose sum is σ = 497539584. Its totient is φ = 53475840.

The previous prime is 202221203. The next prime is 202221233. The reversal of 202221222 is 222122202.

202221222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41233 + ... + 45875.

It is an arithmetic number, because the mean of its divisors is an integer number (7774056).

Almost surely, 2^202221222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202221222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248769792).

202221222 is an abundant number, since it is smaller than the sum of its proper divisors (295318362).

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

202221222 is a wasteful number, since it uses less digits than its factorization.

202221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4733.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 202221222 is about 14220.4508367351. The cubic root of 202221222 is about 586.9605461305.

Adding to 202221222 its reverse (222122202), we get a palindrome (424343424).

The spelling of 202221222 in words is "two hundred two million, two hundred twenty-one thousand, two hundred twenty-two".