22001321222 has 16 divisors (see below), whose sum is σ = 34950521520. Its totient is φ = 10351415808.

The previous prime is 22001321213. The next prime is 22001321233. The reversal of 22001321222 is 22212310022.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 22001321222.

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, 105713 + ... + 234899.

It is an arithmetic number, because the mean of its divisors is an integer number (2184407595).

Almost surely, 2^22001321222 is an apocalyptic number.

22001321222 is a deficient number, since it is larger than the sum of its proper divisors (12949200298).

22001321222 is a wasteful number, since it uses less digits than its factorization.

22001321222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134215.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 22001321222 its reverse (22212310022), we get a palindrome (44213631244).

The spelling of 22001321222 in words is "twenty-two billion, one million, three hundred twenty-one thousand, two hundred twenty-two".