22013020121321 has 2 divisors, whose sum is σ = 22013020121322. Its totient is φ = 22013020121320.

The previous prime is 22013020121297. The next prime is 22013020121369. The reversal of 22013020121321 is 12312102031022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20512973265625 + 1500046855696 = 4529125^2 + 1224764^2 .

It is a cyclic number.

It is not a de Polignac number, because 22013020121321 - 2¹⁰ = 22013020120297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22013020121293 and 22013020121302.

It is not a weakly prime, because it can be changed into another prime (22013020121381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11006510060660 + 11006510060661.

It is an arithmetic number, because the mean of its divisors is an integer number (11006510060661).

Almost surely, 2^{22013020121321} is an apocalyptic number.

It is an amenable number.

22013020121321 is a deficient number, since it is larger than the sum of its proper divisors (1).

22013020121321 is an equidigital number, since it uses as much as digits as its factorization.

22013020121321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 22013020121321 its reverse (12312102031022), we get a palindrome (34325122152343).

The spelling of 22013020121321 in words is "twenty-two trillion, thirteen billion, twenty million, one hundred twenty-one thousand, three hundred twenty-one".