11212340212 has 12 divisors (see below), whose sum is σ = 19622346660. Its totient is φ = 5605955456.

The previous prime is 11212340159. The next prime is 11212340213. The reversal of 11212340212 is 21204321211.

It can be written as a sum of positive squares in 2 ways, for example, as 709369956 + 10502970256 = 26634^2 + 102484^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11212340212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11212340213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148428 + ... + 210844.

It is an arithmetic number, because the mean of its divisors is an integer number (1635195555).

Almost surely, 2^11212340212 is an apocalyptic number.

It is an amenable number.

11212340212 is a deficient number, since it is larger than the sum of its proper divisors (8410006448).

11212340212 is a wasteful number, since it uses less digits than its factorization.

11212340212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107330 (or 107328 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 11212340212 its reverse (21204321211), we get a palindrome (32416661423).

The spelling of 11212340212 in words is "eleven billion, two hundred twelve million, three hundred forty thousand, two hundred twelve".