11222221122012 has 96 divisors (see below), whose sum is σ = 29186937964800. Its totient is φ = 3335143928832.

The previous prime is 11222221122011. The next prime is 11222221122043. The reversal of 11222221122012 is 21022112222211.

It is a super-2 number, since 2×11222221122012² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11222221122012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11222221122011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54482914 + ... + 54688502.

It is an arithmetic number, because the mean of its divisors is an integer number (304030603800).

Almost surely, 2^{11222221122012} is an apocalyptic number.

11222221122012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11222221122012 is an abundant number, since it is smaller than the sum of its proper divisors (17964716842788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11222221122012 is a wasteful number, since it uses less digits than its factorization.

11222221122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219715 (or 219713 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 11222221122012 its reverse (21022112222211), we get a palindrome (32244333344223).

The spelling of 11222221122012 in words is "eleven trillion, two hundred twenty-two billion, two hundred twenty-one million, one hundred twenty-two thousand, twelve".