201222222 has 16 divisors (see below), whose sum is σ = 403943760. Its totient is φ = 66824192.

The previous prime is 201222211. The next prime is 201222223. The reversal of 201222222 is 222222102.

201222222 is a modest number, since divided by 22222 gives 2012 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201222223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60723 + ... + 63950.

It is an arithmetic number, because the mean of its divisors is an integer number (25246485).

Almost surely, 2^201222222 is an apocalyptic number.

201222222 is an abundant number, since it is smaller than the sum of its proper divisors (202721538).

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

201222222 is a wasteful number, since it uses less digits than its factorization.

201222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124947.

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

The square root of 201222222 is about 14185.2818794693. The cubic root of 201222222 is about 585.9923954641.

Adding to 201222222 its reverse (222222102), we get a palindrome (423444324).

The spelling of 201222222 in words is "two hundred one million, two hundred twenty-two thousand, two hundred twenty-two".