22303202021 has 2 divisors, whose sum is σ = 22303202022. Its totient is φ = 22303202020.

The previous prime is 22303201967. The next prime is 22303202023. The reversal of 22303202021 is 12020230322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21722632996 + 580569025 = 147386^2 + 24095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22303202021 is a prime.

It is a Sophie Germain prime.

Together with 22303202023, 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 (22303202023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11151601010 + 11151601011.

It is an arithmetic number, because the mean of its divisors is an integer number (11151601011).

Almost surely, 2^22303202021 is an apocalyptic number.

It is an amenable number.

22303202021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22303202021 is an equidigital number, since it uses as much as digits as its factorization.

22303202021 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 22303202021 its reverse (12020230322), we get a palindrome (34323432343).

The spelling of 22303202021 in words is "twenty-two billion, three hundred three million, two hundred two thousand, twenty-one".