21222002303 has 2 divisors, whose sum is σ = 21222002304. Its totient is φ = 21222002302.

The previous prime is 21222002293. The next prime is 21222002323. The reversal of 21222002303 is 30320022212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21222002303 - 2⁴ = 21222002287 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21222002323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611001151 + 10611001152.

It is an arithmetic number, because the mean of its divisors is an integer number (10611001152).

Almost surely, 2^21222002303 is an apocalyptic number.

21222002303 is a deficient number, since it is larger than the sum of its proper divisors (1).

21222002303 is an equidigital number, since it uses as much as digits as its factorization.

21222002303 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 21222002303 its reverse (30320022212), we get a palindrome (51542024515).

The spelling of 21222002303 in words is "twenty-one billion, two hundred twenty-two million, two thousand, three hundred three".