11122221120212 has 12 divisors (see below), whose sum is σ = 19465821618516. Its totient is φ = 5560557800640.

The previous prime is 11122221120193. The next prime is 11122221120239. The reversal of 11122221120212 is 21202112222111.

It can be written as a sum of positive squares in 2 ways, for example, as 5971200508816 + 5151020611396 = 2443604^2 + 2269586^2 .

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, 138144593 + ... + 138225080.

It is an arithmetic number, because the mean of its divisors is an integer number (1622151801543).

Almost surely, 2^{11122221120212} is an apocalyptic number.

It is an amenable number.

11122221120212 is a deficient number, since it is larger than the sum of its proper divisors (8343600498304).

11122221120212 is a wasteful number, since it uses less digits than its factorization.

11122221120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276379738 (or 276379736 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 11122221120212 its reverse (21202112222111), we get a palindrome (32324333342323).

The spelling of 11122221120212 in words is "eleven trillion, one hundred twenty-two billion, two hundred twenty-one million, one hundred twenty thousand, two hundred twelve".