22220122321 has 2 divisors, whose sum is σ = 22220122322. Its totient is φ = 22220122320.

The previous prime is 22220122319. The next prime is 22220122369. The reversal of 22220122321 is 12322102222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22220076096 + 46225 = 149064^2 + 215^2 .

It is a cyclic number.

It is not a de Polignac number, because 22220122321 - 2¹ = 22220122319 is a prime.

Together with 22220122319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22220122721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110061160 + 11110061161.

It is an arithmetic number, because the mean of its divisors is an integer number (11110061161).

Almost surely, 2^22220122321 is an apocalyptic number.

It is an amenable number.

22220122321 is a deficient number, since it is larger than the sum of its proper divisors (1).

22220122321 is an equidigital number, since it uses as much as digits as its factorization.

22220122321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 22220122321 its reverse (12322102222), we get a palindrome (34542224543).

The spelling of 22220122321 in words is "twenty-two billion, two hundred twenty million, one hundred twenty-two thousand, three hundred twenty-one".