2011212233 has 4 divisors (see below), whose sum is σ = 2024022660. Its totient is φ = 1998401808.

The previous prime is 2011212227. The next prime is 2011212289. The reversal of 2011212233 is 3322121102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 700555024 + 1310657209 = 26468^2 + 36203^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2011212233 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2011232233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6404978 + ... + 6405291.

It is an arithmetic number, because the mean of its divisors is an integer number (506005665).

Almost surely, 2^2011212233 is an apocalyptic number.

It is an amenable number.

2011212233 is a deficient number, since it is larger than the sum of its proper divisors (12810427).

2011212233 is a wasteful number, since it uses less digits than its factorization.

2011212233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12810426.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2011212233 is about 44846.5409256946. The cubic root of 2011212233 is about 1262.2710852221.

Adding to 2011212233 its reverse (3322121102), we get a palindrome (5333333335).

The spelling of 2011212233 in words is "two billion, eleven million, two hundred twelve thousand, two hundred thirty-three".