11212011212212 has 12 divisors (see below), whose sum is σ = 19804393637280. Its totient is φ = 5553613030136.

The previous prime is 11212011212177. The next prime is 11212011212291. The reversal of 11212011212212 is 21221211021211.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11212011212212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13098143512 + ... + 13098144367.

It is an arithmetic number, because the mean of its divisors is an integer number (1650366136440).

Almost surely, 2^{11212011212212} is an apocalyptic number.

It is an amenable number.

11212011212212 is a deficient number, since it is larger than the sum of its proper divisors (8592382425068).

11212011212212 is a wasteful number, since it uses less digits than its factorization.

11212011212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26196287990 (or 26196287988 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11212011212212 its reverse (21221211021211), we get a palindrome (32433222233423).

The spelling of 11212011212212 in words is "eleven trillion, two hundred twelve billion, eleven million, two hundred twelve thousand, two hundred twelve".