22210110221 has 4 divisors (see below), whose sum is σ = 23918580252. Its totient is φ = 20501640192.

The previous prime is 22210110203. The next prime is 22210110281. The reversal of 22210110221 is 12201101222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13135452100 + 9074658121 = 114610^2 + 95261^2 .

It is a cyclic number.

It is not a de Polignac number, because 22210110221 - 2⁶ = 22210110157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22210110196 and 22210110205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22210110281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 854234996 + ... + 854235021.

It is an arithmetic number, because the mean of its divisors is an integer number (5979645063).

Almost surely, 2^22210110221 is an apocalyptic number.

It is an amenable number.

22210110221 is a deficient number, since it is larger than the sum of its proper divisors (1708470031).

22210110221 is a wasteful number, since it uses less digits than its factorization.

22210110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708470030.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22210110221 its reverse (12201101222), we get a palindrome (34411211443).

The spelling of 22210110221 in words is "twenty-two billion, two hundred ten million, one hundred ten thousand, two hundred twenty-one".