11212210233 has 72 divisors (see below), whose sum is σ = 19615876488. Its totient is φ = 6147767808.

The previous prime is 11212210201. The next prime is 11212210241. The reversal of 11212210233 is 33201221211.

11212210233 is a `hidden beast` number, since 11 + 212 + 210 + 233 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 8203468329 + 3008741904 = 90573^2 + 54852^2 .

It is not a de Polignac number, because 11212210233 - 2⁵ = 11212210201 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11212210033) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1186435 + ... + 1195847.

It is an arithmetic number, because the mean of its divisors is an integer number (272442729).

Almost surely, 2^11212210233 is an apocalyptic number.

It is an amenable number.

11212210233 is a deficient number, since it is larger than the sum of its proper divisors (8403666255).

11212210233 is a wasteful number, since it uses less digits than its factorization.

11212210233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9543 (or 9533 counting only the distinct ones).

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

Adding to 11212210233 its reverse (33201221211), we get a palindrome (44413431444).

It can be divided in two parts, 11212 and 210233, that added together give a triangular number (221445 = T₆₆₅).

The spelling of 11212210233 in words is "eleven billion, two hundred twelve million, two hundred ten thousand, two hundred thirty-three".