201112220 has 24 divisors (see below), whose sum is σ = 422637264. Its totient is φ = 80387456.

The previous prime is 201112217. The next prime is 201112229. The reversal of 201112220 is 22211102.

It is a happy number.

It is a super-2 number, since 2×201112220² = 80892250066656800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201112229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35504 + ... + 40776.

It is an arithmetic number, because the mean of its divisors is an integer number (17609886).

Almost surely, 2^201112220 is an apocalyptic number.

201112220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201112220 is an abundant number, since it is smaller than the sum of its proper divisors (221525044).

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

201112220 is a wasteful number, since it uses less digits than its factorization.

201112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7189 (or 7187 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 201112220 is about 14181.4040207590. The cubic root of 201112220 is about 585.8855946602.

Adding to 201112220 its reverse (22211102), we get a palindrome (223323322).

The spelling of 201112220 in words is "two hundred one million, one hundred twelve thousand, two hundred twenty".