11122212222222 has 8 divisors (see below), whose sum is σ = 22244424444456. Its totient is φ = 3707404074072.

The previous prime is 11122212222181. The next prime is 11122212222239. The reversal of 11122212222222 is 22222221222111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

11122212222222 is an admirable number.

It is a super-2 number, since 2×11122212222222² (a number of 27 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 11122212222192 and 11122212222201.

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, 926851018513 + ... + 926851018524.

It is an arithmetic number, because the mean of its divisors is an integer number (2780553055557).

Almost surely, 2^{11122212222222} is an apocalyptic number.

11122212222222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11122212222222 is a wasteful number, since it uses less digits than its factorization.

11122212222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853702037042.

The product of its digits is 1024, while the sum is 24.

Adding to 11122212222222 its reverse (22222221222111), we get a palindrome (33344433444333).

The spelling of 11122212222222 in words is "eleven trillion, one hundred twenty-two billion, two hundred twelve million, two hundred twenty-two thousand, two hundred twenty-two".