11121210212212 has 12 divisors (see below), whose sum is σ = 19462145153220. Its totient is φ = 5560597311296.

The previous prime is 11121210212207. The next prime is 11121210212269. The reversal of 11121210212212 is 21221201212111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1812889902096 + 9308320310116 = 1346436^2 + 3050954^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11121210212212.

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, 2282058 + ... + 5239294.

It is an arithmetic number, because the mean of its divisors is an integer number (1621845429435).

Almost surely, 2^{11121210212212} is an apocalyptic number.

It is an amenable number.

11121210212212 is a deficient number, since it is larger than the sum of its proper divisors (8340934941008).

11121210212212 is a wasteful number, since it uses less digits than its factorization.

11121210212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3897410 (or 3897408 counting only the distinct ones).

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

Adding to 11121210212212 its reverse (21221201212111), we get a palindrome (32342411424323).

The spelling of 11121210212212 in words is "eleven trillion, one hundred twenty-one billion, two hundred ten million, two hundred twelve thousand, two hundred twelve".