22102220121 has 16 divisors (see below), whose sum is σ = 29541948480. Its totient is φ = 14698687680.

The previous prime is 22102220059. The next prime is 22102220191. The reversal of 22102220121 is 12102220122.

It is not a de Polignac number, because 22102220121 - 2¹⁴ = 22102203737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22102220121.

It is not an unprimeable number, because it can be changed into a prime (22102220191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3718570 + ... + 3724508.

It is an arithmetic number, because the mean of its divisors is an integer number (1846371780).

Almost surely, 2^22102220121 is an apocalyptic number.

It is an amenable number.

22102220121 is a deficient number, since it is larger than the sum of its proper divisors (7439728359).

22102220121 is a wasteful number, since it uses less digits than its factorization.

22102220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8776.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22102220121 its reverse (12102220122), we get a palindrome (34204440243).

Subtracting from 22102220121 its reverse (12102220122), we obtain a palindrome (9999999999).

The spelling of 22102220121 in words is "twenty-two billion, one hundred two million, two hundred twenty thousand, one hundred twenty-one".