22211221222 has 8 divisors (see below), whose sum is σ = 33317480016. Its totient is φ = 11105394552.

The previous prime is 22211221211. The next prime is 22211221229. The reversal of 22211221222 is 22212211222.

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

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

It is a self number, because there is not a number n which added to its sum of digits gives 22211221222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22211221229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102628 + ... + 234424.

It is an arithmetic number, because the mean of its divisors is an integer number (4164685002).

Almost surely, 2^22211221222 is an apocalyptic number.

22211221222 is a deficient number, since it is larger than the sum of its proper divisors (11106258794).

22211221222 is a wasteful number, since it uses less digits than its factorization.

22211221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216062.

The product of its digits is 256, while the sum is 19.

Adding to 22211221222 its reverse (22212211222), we get a palindrome (44423432444).

The spelling of 22211221222 in words is "twenty-two billion, two hundred eleven million, two hundred twenty-one thousand, two hundred twenty-two".