22121113321 has 2 divisors, whose sum is σ = 22121113322. Its totient is φ = 22121113320.

The previous prime is 22121113307. The next prime is 22121113361. The reversal of 22121113321 is 12331112122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15366081600 + 6755031721 = 123960^2 + 82189^2 .

It is a cyclic number.

It is not a de Polignac number, because 22121113321 - 2¹⁷ = 22120982249 is a prime.

It is not a weakly prime, because it can be changed into another prime (22121113361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060556660 + 11060556661.

It is an arithmetic number, because the mean of its divisors is an integer number (11060556661).

Almost surely, 2^22121113321 is an apocalyptic number.

It is an amenable number.

22121113321 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121113321 is an equidigital number, since it uses as much as digits as its factorization.

22121113321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 19.

Adding to 22121113321 its reverse (12331112122), we get a palindrome (34452225443).

The spelling of 22121113321 in words is "twenty-two billion, one hundred twenty-one million, one hundred thirteen thousand, three hundred twenty-one".