22320869 has 2 divisors, whose sum is σ = 22320870. Its totient is φ = 22320868.

The previous prime is 22320841. The next prime is 22320871. The reversal of 22320869 is 96802322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19918369 + 2402500 = 4463^2 + 1550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22320869 is a prime.

It is a super-3 number, since 3×22320869³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

Together with 22320871, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22320829) 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, 11160434 + 11160435.

It is an arithmetic number, because the mean of its divisors is an integer number (11160435).

Almost surely, 2^22320869 is an apocalyptic number.

It is an amenable number.

22320869 is a deficient number, since it is larger than the sum of its proper divisors (1).

22320869 is an equidigital number, since it uses as much as digits as its factorization.

22320869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 22320869 is about 4724.4966927706. The cubic root of 22320869 is about 281.5596172843.

The spelling of 22320869 in words is "twenty-two million, three hundred twenty thousand, eight hundred sixty-nine".