22222221221222 has 64 divisors (see below), whose sum is σ = 37316219719680. Its totient is φ = 9837779767200.

The previous prime is 22222221221173. The next prime is 22222221221261. The reversal of 22222221221222 is 22212212222222.

It is a super-3 number, since 3×22222221221222³ (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 = 22222221221191 and 22222221221200.

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, 740454197 + ... + 740484207.

It is an arithmetic number, because the mean of its divisors is an integer number (583065933120).

Almost surely, 2^{22222221221222} is an apocalyptic number.

22222221221222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22222221221222 is a deficient number, since it is larger than the sum of its proper divisors (15093998498458).

22222221221222 is a wasteful number, since it uses less digits than its factorization.

22222221221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32289.

The product of its digits is 4096, while the sum is 26.

Adding to 22222221221222 its reverse (22212212222222), we get a palindrome (44434433443444).

The spelling of 22222221221222 in words is "twenty-two trillion, two hundred twenty-two billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred twenty-two".