11022112222212 has 144 divisors (see below), whose sum is σ = 31830222412800. Its totient is φ = 2906651389824.

The previous prime is 11022112222207. The next prime is 11022112222249. The reversal of 11022112222212 is 21222221122011.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 177461539 + ... + 177523637.

It is an arithmetic number, because the mean of its divisors is an integer number (221043211200).

Almost surely, 2^{11022112222212} is an apocalyptic number.

11022112222212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11022112222212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15915111206400).

11022112222212 is an abundant number, since it is smaller than the sum of its proper divisors (20808110190588).

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

11022112222212 is a wasteful number, since it uses less digits than its factorization.

11022112222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74642 (or 74627 counting only the distinct ones).

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

Adding to 11022112222212 its reverse (21222221122011), we get a palindrome (32244333344223).

The spelling of 11022112222212 in words is "eleven trillion, twenty-two billion, one hundred twelve million, two hundred twenty-two thousand, two hundred twelve".