201133812 has 48 divisors (see below), whose sum is σ = 515418624. Its totient is φ = 60540000.

The previous prime is 201133787. The next prime is 201133819. The reversal of 201133812 is 218331102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201133819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14887 + ... + 24977.

It is an arithmetic number, because the mean of its divisors is an integer number (10737888).

Almost surely, 2^201133812 is an apocalyptic number.

201133812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201133812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257709312).

201133812 is an abundant number, since it is smaller than the sum of its proper divisors (314284812).

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

201133812 is a wasteful number, since it uses less digits than its factorization.

201133812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10260 (or 10258 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 201133812 is about 14182.1652789692. The cubic root of 201133812 is about 585.9065613773.

Adding to 201133812 its reverse (218331102), we get a palindrome (419464914).

The spelling of 201133812 in words is "two hundred one million, one hundred thirty-three thousand, eight hundred twelve".