22111122222222 has 64 divisors (see below), whose sum is σ = 51081593739264. Its totient is φ = 6306035235840.

The previous prime is 22111122222191. The next prime is 22111122222253. The reversal of 22111122222222 is 22222222111122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22111122222191) and next prime (22111122222253).

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

22111122222222 is a modest number, since divided by 2222222 gives 2211112 as remainder.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 22111122222192 and 22111122222201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45679338 + ... + 46160850.

It is an arithmetic number, because the mean of its divisors is an integer number (798149902176).

Almost surely, 2^{22111122222222} is an apocalyptic number.

22111122222222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22111122222222 is an abundant number, since it is smaller than the sum of its proper divisors (28970471517042).

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

22111122222222 is a wasteful number, since it uses less digits than its factorization.

22111122222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522473.

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

Adding to 22111122222222 its reverse (22222222111122), we get a palindrome (44333344333344).

The spelling of 22111122222222 in words is "twenty-two trillion, one hundred eleven billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty-two".