201133220 has 24 divisors (see below), whose sum is σ = 426122424. Its totient is φ = 79740416.

The previous prime is 201133217. The next prime is 201133243. The reversal of 201133220 is 22331102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3786916 + 197346304 = 1946^2 + 14048^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201133195 and 201133204.

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, 42239 + ... + 46758.

It is an arithmetic number, because the mean of its divisors is an integer number (17755101).

Almost surely, 2^201133220 is an apocalyptic number.

201133220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201133220 is an abundant number, since it is smaller than the sum of its proper divisors (224989204).

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

201133220 is a wasteful number, since it uses less digits than its factorization.

201133220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89119 (or 89117 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 201133220 is about 14182.1444076698. The cubic root of 201133220 is about 585.9059865410.

Adding to 201133220 its reverse (22331102), we get a palindrome (223464322).

The spelling of 201133220 in words is "two hundred one million, one hundred thirty-three thousand, two hundred twenty".