22211221110221 has 32 divisors (see below), whose sum is σ = 26339968561536. Its totient is φ = 18463334400000.

The previous prime is 22211221110187. The next prime is 22211221110227. The reversal of 22211221110221 is 12201112211222.

It is a cyclic number.

It is not a de Polignac number, because 22211221110221 - 2³⁸ = 21936343203277 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22211221110193 and 22211221110202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22211221110227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 274168721 + ... + 274249721.

It is an arithmetic number, because the mean of its divisors is an integer number (823124017548).

Almost surely, 2^{22211221110221} is an apocalyptic number.

It is an amenable number.

22211221110221 is a deficient number, since it is larger than the sum of its proper divisors (4128747451315).

22211221110221 is a wasteful number, since it uses less digits than its factorization.

22211221110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99053.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 22211221110221 its reverse (12201112211222), we get a palindrome (34412333321443).

The spelling of 22211221110221 in words is "twenty-two trillion, two hundred eleven billion, two hundred twenty-one million, one hundred ten thousand, two hundred twenty-one".