212011302321 has 24 divisors (see below), whose sum is σ = 376908983360. Its totient is φ = 111830137056.

The previous prime is 212011302317. The next prime is 212011302323. The reversal of 212011302321 is 123203110212.

212011302321 is a `hidden beast` number, since 21 + 20 + 1 + 1 + 302 + 321 = 666.

It is not a de Polignac number, because 212011302321 - 2² = 212011302317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212011302294 and 212011302303.

It is not an unprimeable number, because it can be changed into a prime (212011302323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129432211 + ... + 129433848.

Almost surely, 2^212011302321 is an apocalyptic number.

212011302321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

212011302321 is a deficient number, since it is larger than the sum of its proper divisors (164897681039).

212011302321 is a wasteful number, since it uses less digits than its factorization.

212011302321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258866085 (or 258866082 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 212011302321 its reverse (123203110212), we get a palindrome (335214412533).

The spelling of 212011302321 in words is "two hundred twelve billion, eleven million, three hundred two thousand, three hundred twenty-one".