21022422203 has 2 divisors, whose sum is σ = 21022422204. Its totient is φ = 21022422202.

The previous prime is 21022421999. The next prime is 21022422209. The reversal of 21022422203 is 30222422012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21022422203 - 2⁸ = 21022421947 is a prime.

It is not a weakly prime, because it can be changed into another prime (21022422209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10511211101 + 10511211102.

It is an arithmetic number, because the mean of its divisors is an integer number (10511211102).

Almost surely, 2^21022422203 is an apocalyptic number.

21022422203 is a deficient number, since it is larger than the sum of its proper divisors (1).

21022422203 is an equidigital number, since it uses as much as digits as its factorization.

21022422203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 21022422203 its reverse (30222422012), we get a palindrome (51244844215).

The spelling of 21022422203 in words is "twenty-one billion, twenty-two million, four hundred twenty-two thousand, two hundred three".