22110220221 has 16 divisors (see below), whose sum is σ = 29546250240. Its totient is φ = 14707208880.

The previous prime is 22110220201. The next prime is 22110220261. The reversal of 22110220221 is 12202201122.

It is not a de Polignac number, because 22110220221 - 2⁵ = 22110220189 is a prime.

It is a super-2 number, since 2×22110220221² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22110220221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22110220201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2695236 + ... + 2703426.

It is an arithmetic number, because the mean of its divisors is an integer number (1846640640).

Almost surely, 2^22110220221 is an apocalyptic number.

It is an amenable number.

22110220221 is a deficient number, since it is larger than the sum of its proper divisors (7436030019).

22110220221 is a wasteful number, since it uses less digits than its factorization.

22110220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10096.

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

Adding to 22110220221 its reverse (12202201122), we get a palindrome (34312421343).

The spelling of 22110220221 in words is "twenty-two billion, one hundred ten million, two hundred twenty thousand, two hundred twenty-one".