2011201236 has 144 divisors (see below), whose sum is σ = 5811886080. Its totient is φ = 580472640.

The previous prime is 2011201223. The next prime is 2011201271. The reversal of 2011201236 is 6321021102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 3998161 + ... + 3998663.

It is an arithmetic number, because the mean of its divisors is an integer number (40360320).

Almost surely, 2^2011201236 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 2011201236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2905943040).

2011201236 is an abundant number, since it is smaller than the sum of its proper divisors (3800684844).

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

2011201236 is a wasteful number, since it uses less digits than its factorization.

2011201236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986 (or 981 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2011201236 is about 44846.4183185235. The cubic root of 2011201236 is about 1262.2687845830.

Adding to 2011201236 its reverse (6321021102), we get a palindrome (8332222338).

The spelling of 2011201236 in words is "two billion, eleven million, two hundred one thousand, two hundred thirty-six".