201222112 has 96 divisors (see below), whose sum is σ = 499226112. Its totient is φ = 77704704.

The previous prime is 201222067. The next prime is 201222121. The reversal of 201222112 is 211222102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 201222092 and 201222101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124413 + ... + 126019.

It is an arithmetic number, because the mean of its divisors is an integer number (5200272).

Almost surely, 2^201222112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201222112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249613056).

201222112 is an abundant number, since it is smaller than the sum of its proper divisors (298004000).

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

201222112 is a wasteful number, since it uses less digits than its factorization.

201222112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680 (or 1672 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 201222112 is about 14185.2780022106. The cubic root of 201222112 is about 585.9922886846.

Adding to 201222112 its reverse (211222102), we get a palindrome (412444214).

The spelling of 201222112 in words is "two hundred one million, two hundred twenty-two thousand, one hundred twelve".