11011212222222 has 32 divisors (see below), whose sum is σ = 22438238512032. Its totient is φ = 3601103560704.

The previous prime is 11011212222211. The next prime is 11011212222271. The reversal of 11011212222222 is 22222221211011.

It is a super-2 number, since 2×11011212222222² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30225138 + ... + 30587274.

It is an arithmetic number, because the mean of its divisors is an integer number (701194953501).

Almost surely, 2^{11011212222222} is an apocalyptic number.

11011212222222 is an abundant number, since it is smaller than the sum of its proper divisors (11427026289810).

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

11011212222222 is a wasteful number, since it uses less digits than its factorization.

11011212222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457812.

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

Adding to 11011212222222 its reverse (22222221211011), we get a palindrome (33233433433233).

The spelling of 11011212222222 in words is "eleven trillion, eleven billion, two hundred twelve million, two hundred twenty-two thousand, two hundred twenty-two".