22313321 has 2 divisors, whose sum is σ = 22313322. Its totient is φ = 22313320.

The previous prime is 22313303. The next prime is 22313339. The reversal of 22313321 is 12331322.

It is a balanced prime because it is at equal distance from previous prime (22313303) and next prime (22313339).

It can be written as a sum of positive squares in only one way, i.e., 21058921 + 1254400 = 4589^2 + 1120^2 .

It is a cyclic number.

It is not a de Polignac number, because 22313321 - 2¹⁸ = 22051177 is a prime.

It is a super-3 number, since 3×22313321³ (a number of 23 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22313321.

It is not a weakly prime, because it can be changed into another prime (22313821) 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, 11156660 + 11156661.

It is an arithmetic number, because the mean of its divisors is an integer number (11156661).

Almost surely, 2^22313321 is an apocalyptic number.

It is an amenable number.

22313321 is a deficient number, since it is larger than the sum of its proper divisors (1).

22313321 is an equidigital number, since it uses as much as digits as its factorization.

22313321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 17.

The square root of 22313321 is about 4723.6978099790. The cubic root of 22313321 is about 281.5278764116.

Adding to 22313321 its reverse (12331322), we get a palindrome (34644643).

The spelling of 22313321 in words is "twenty-two million, three hundred thirteen thousand, three hundred twenty-one".