22000112221 has 8 divisors (see below), whose sum is σ = 22448354904. Its totient is φ = 21553097280.

The previous prime is 22000112177. The next prime is 22000112227. The reversal of 22000112221 is 12221100022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9842624100 + 12157488121 = 99210^2 + 110261^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22000112221 - 2¹⁷ = 21999981149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22000112227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270690 + ... + 342451.

It is an arithmetic number, because the mean of its divisors is an integer number (2806044363).

Almost surely, 2^22000112221 is an apocalyptic number.

It is an amenable number.

22000112221 is a deficient number, since it is larger than the sum of its proper divisors (448242683).

22000112221 is an equidigital number, since it uses as much as digits as its factorization.

22000112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613871.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22000112221 its reverse (12221100022), we get a palindrome (34221212243).

The spelling of 22000112221 in words is "twenty-two billion, one hundred twelve thousand, two hundred twenty-one".