211330020321 has 24 divisors (see below), whose sum is σ = 348891803520. Its totient is φ = 120749783616.

The previous prime is 211330020311. The next prime is 211330020329. The reversal of 211330020321 is 123020033112.

211330020321 is a `hidden beast` number, since 2 + 11 + 330 + 0 + 2 + 0 + 321 = 666.

It is not a de Polignac number, because 211330020321 - 2⁶ = 211330020257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211330020294 and 211330020303.

It is not an unprimeable number, because it can be changed into a prime (211330020329) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 641725 + ... + 913493.

It is an arithmetic number, because the mean of its divisors is an integer number (14537158480).

Almost surely, 2^211330020321 is an apocalyptic number.

211330020321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

211330020321 is a deficient number, since it is larger than the sum of its proper divisors (137561783199).

211330020321 is a wasteful number, since it uses less digits than its factorization.

211330020321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284125 (or 284122 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 211330020321 its reverse (123020033112), we get a palindrome (334350053433).

The spelling of 211330020321 in words is "two hundred eleven billion, three hundred thirty million, twenty thousand, three hundred twenty-one".