201122222 has 16 divisors (see below), whose sum is σ = 347946720. Its totient is φ = 85403808.

The previous prime is 201122183. The next prime is 201122237. The reversal of 201122222 is 222221102.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 201122197 and 201122206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64373 + ... + 67424.

It is an arithmetic number, because the mean of its divisors is an integer number (21746670).

Almost surely, 2^201122222 is an apocalyptic number.

201122222 is a deficient number, since it is larger than the sum of its proper divisors (146824498).

201122222 is a wasteful number, since it uses less digits than its factorization.

201122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131915.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 201122222 is about 14181.7566612885. The cubic root of 201122222 is about 585.8953071987.

Adding to 201122222 its reverse (222221102), we get a palindrome (423343324).

The spelling of 201122222 in words is "two hundred one million, one hundred twenty-two thousand, two hundred twenty-two".