22320203021 has 2 divisors, whose sum is σ = 22320203022. Its totient is φ = 22320203020.

The previous prime is 22320202997. The next prime is 22320203033. The reversal of 22320203021 is 12030202322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17775555625 + 4544647396 = 133325^2 + 67414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22320203021 is a prime.

It is a super-3 number, since 3×22320203021³ (a number of 32 digits) contains 333 as substring.

It is a Sophie Germain 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 (22320203221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11160101510 + 11160101511.

It is an arithmetic number, because the mean of its divisors is an integer number (11160101511).

Almost surely, 2^22320203021 is an apocalyptic number.

It is an amenable number.

22320203021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22320203021 is an equidigital number, since it uses as much as digits as its factorization.

22320203021 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 17.

Adding to 22320203021 its reverse (12030202322), we get a palindrome (34350405343).

The spelling of 22320203021 in words is "twenty-two billion, three hundred twenty million, two hundred three thousand, twenty-one".