22361321 has 2 divisors, whose sum is σ = 22361322. Its totient is φ = 22361320.

The previous prime is 22361303. The next prime is 22361329. The reversal of 22361321 is 12316322.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18826921 + 3534400 = 4339^2 + 1880^2 .

It is a cyclic number.

It is not a de Polignac number, because 22361321 - 2¹⁸ = 22099177 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22361293 and 22361302.

It is not a weakly prime, because it can be changed into another prime (22361329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11180660 + 11180661.

It is an arithmetic number, because the mean of its divisors is an integer number (11180661).

Almost surely, 2^22361321 is an apocalyptic number.

It is an amenable number.

22361321 is a deficient number, since it is larger than the sum of its proper divisors (1).

22361321 is an equidigital number, since it uses as much as digits as its factorization.

22361321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 20.

The square root of 22361321 is about 4728.7758458189. The cubic root of 22361321 is about 281.7296043353.

Adding to 22361321 its reverse (12316322), we get a palindrome (34677643).

The spelling of 22361321 in words is "twenty-two million, three hundred sixty-one thousand, three hundred twenty-one".