21003230219 has 2 divisors, whose sum is σ = 21003230220. Its totient is φ = 21003230218.

The previous prime is 21003230207. The next prime is 21003230221. The reversal of 21003230219 is 91203230012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21003230219 - 2⁸ = 21003229963 is a prime.

It is a super-2 number, since 2×21003230219² (a number of 21 digits) contains 22 as substring.

Together with 21003230221, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 21003230194 and 21003230203.

It is not a weakly prime, because it can be changed into another prime (21003230279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10501615109 + 10501615110.

It is an arithmetic number, because the mean of its divisors is an integer number (10501615110).

Almost surely, 2^21003230219 is an apocalyptic number.

21003230219 is a deficient number, since it is larger than the sum of its proper divisors (1).

21003230219 is an equidigital number, since it uses as much as digits as its factorization.

21003230219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The spelling of 21003230219 in words is "twenty-one billion, three million, two hundred thirty thousand, two hundred nineteen".