21133304719 has 2 divisors, whose sum is σ = 21133304720. Its totient is φ = 21133304718.

The previous prime is 21133304713. The next prime is 21133304783. The reversal of 21133304719 is 91740333112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21133304719 - 2²⁷ = 20999086991 is a prime.

It is a super-2 number, since 2×21133304719² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21133304713) 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, 10566652359 + 10566652360.

It is an arithmetic number, because the mean of its divisors is an integer number (10566652360).

Almost surely, 2^21133304719 is an apocalyptic number.

21133304719 is a deficient number, since it is larger than the sum of its proper divisors (1).

21133304719 is an equidigital number, since it uses as much as digits as its factorization.

21133304719 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 34.

The spelling of 21133304719 in words is "twenty-one billion, one hundred thirty-three million, three hundred four thousand, seven hundred nineteen".