201111222 has 16 divisors (see below), whose sum is σ = 433162800. Its totient is φ = 61880352.

The previous prime is 201111221. The next prime is 201111227. The reversal of 201111222 is 222111102.

It is a super-2 number, since 2×201111222² = 80891447228666568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201111198 and 201111207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201111221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1289097 + ... + 1289252.

It is an arithmetic number, because the mean of its divisors is an integer number (27072675).

Almost surely, 2^201111222 is an apocalyptic number.

201111222 is an abundant number, since it is smaller than the sum of its proper divisors (232051578).

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

201111222 is a wasteful number, since it uses less digits than its factorization.

201111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2578367.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 201111222 is about 14181.3688337903. The cubic root of 201111222 is about 585.8846255250.

Adding to 201111222 its reverse (222111102), we get a palindrome (423222324).

The spelling of 201111222 in words is "two hundred one million, one hundred eleven thousand, two hundred twenty-two".