21301111219 has 2 divisors, whose sum is σ = 21301111220. Its totient is φ = 21301111218.

The previous prime is 21301111213. The next prime is 21301111241. The reversal of 21301111219 is 91211110312.

It is an a-pointer prime, because the next prime (21301111241) can be obtained adding 21301111219 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21301111219 is a prime.

It is a super-2 number, since 2×21301111219² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21301111219.

It is not a weakly prime, because it can be changed into another prime (21301111213) 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, 10650555609 + 10650555610.

It is an arithmetic number, because the mean of its divisors is an integer number (10650555610).

Almost surely, 2^21301111219 is an apocalyptic number.

21301111219 is a deficient number, since it is larger than the sum of its proper divisors (1).

21301111219 is an equidigital number, since it uses as much as digits as its factorization.

21301111219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 22.

The spelling of 21301111219 in words is "twenty-one billion, three hundred one million, one hundred eleven thousand, two hundred nineteen".