21241436219 has 2 divisors, whose sum is σ = 21241436220. Its totient is φ = 21241436218.

The previous prime is 21241436207. The next prime is 21241436221. The reversal of 21241436219 is 91263414212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21241436219 is a prime.

It is a super-2 number, since 2×21241436219² (a number of 21 digits) contains 22 as substring.

Together with 21241436221, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (21241436239) 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, 10620718109 + 10620718110.

It is an arithmetic number, because the mean of its divisors is an integer number (10620718110).

Almost surely, 2^21241436219 is an apocalyptic number.

21241436219 is a deficient number, since it is larger than the sum of its proper divisors (1).

21241436219 is an equidigital number, since it uses as much as digits as its factorization.

21241436219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 35.

The spelling of 21241436219 in words is "twenty-one billion, two hundred forty-one million, four hundred thirty-six thousand, two hundred nineteen".