22212222221222 has 16 divisors (see below), whose sum is σ = 36347345434944. Its totient is φ = 10096444449000.

The previous prime is 22212222221219. The next prime is 22212222221249.

22212222221222 is nontrivially palindromic in base 10.

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 = 22212222221191 and 22212222221200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19444697 + ... + 20555307.

It is an arithmetic number, because the mean of its divisors is an integer number (2271709089684).

Almost surely, 2^{22212222221222} is an apocalyptic number.

22212222221222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22212222221222 is a deficient number, since it is larger than the sum of its proper divisors (14135123213722).

22212222221222 is a wasteful number, since it uses less digits than its factorization.

22212222221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2019715.

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

It can be divided in two parts, 2221222 and 2221222, that added together give a palindrome (4442444).

The spelling of 22212222221222 in words is "twenty-two trillion, two hundred twelve billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred twenty-two".