21330323019 has 6 divisors (see below), whose sum is σ = 30810466596. Its totient is φ = 14220215340.

The previous prime is 21330322987. The next prime is 21330323023. The reversal of 21330323019 is 91032303312.

21330323019 is a `hidden beast` number, since 2 + 1 + 330 + 323 + 0 + 1 + 9 = 666.

It is not a de Polignac number, because 21330323019 - 2⁵ = 21330322987 is a prime.

It is a super-2 number, since 2×21330323019² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21330322983 and 21330323001.

It is not an unprimeable number, because it can be changed into a prime (21330323099) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1185017937 + ... + 1185017954.

It is an arithmetic number, because the mean of its divisors is an integer number (5135077766).

Almost surely, 2^21330323019 is an apocalyptic number.

21330323019 is a deficient number, since it is larger than the sum of its proper divisors (9480143577).

21330323019 is a wasteful number, since it uses less digits than its factorization.

21330323019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370035897 (or 2370035894 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

The spelling of 21330323019 in words is "twenty-one billion, three hundred thirty million, three hundred twenty-three thousand, nineteen".