21222101111122 has 16 divisors (see below), whose sum is σ = 31856078846592. Its totient is φ = 10603408809760.

The previous prime is 21222101111117. The next prime is 21222101111173. The reversal of 21222101111122 is 22111110122212.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21222101111122.

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, 71007003 + ... + 71305249.

It is an arithmetic number, because the mean of its divisors is an integer number (1991004927912).

Almost surely, 2^{21222101111122} is an apocalyptic number.

21222101111122 is a deficient number, since it is larger than the sum of its proper divisors (10633977735470).

21222101111122 is a wasteful number, since it uses less digits than its factorization.

21222101111122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323753.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 21222101111122 its reverse (22111110122212), we get a palindrome (43333211233334).

The spelling of 21222101111122 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred one million, one hundred eleven thousand, one hundred twenty-two".