22112221221222 has 48 divisors (see below), whose sum is σ = 51249715664832. Its totient is φ = 6306515850880.

The previous prime is 22112221221197. The next prime is 22112221221253. The reversal of 22112221221222 is 22212212221122.

It is a happy number.

It is a super-3 number, since 3×22112221221222³ (a number of 41 digits) contains 333 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 = 22112221221192 and 22112221221201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 579623928 + ... + 579662075.

It is an arithmetic number, because the mean of its divisors is an integer number (1067702409684).

Almost surely, 2^{22112221221222} is an apocalyptic number.

22112221221222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22112221221222 is an abundant number, since it is smaller than the sum of its proper divisors (29137494443610).

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

22112221221222 is a wasteful number, since it uses less digits than its factorization.

22112221221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159286053 (or 1159286036 counting only the distinct ones).

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

Adding to 22112221221222 its reverse (22212212221122), we get a palindrome (44324433442344).

The spelling of 22112221221222 in words is "twenty-two trillion, one hundred twelve billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred twenty-two".