213213330021321 has 12 divisors (see below), whose sum is σ = 351971211463872. Its totient is φ = 121836188583576.

The previous prime is 213213330021281. The next prime is 213213330021359. The reversal of 213213330021321 is 123120033312312.

213213330021321 is a `hidden beast` number, since 2 + 1 + 3 + 2 + 1 + 3 + 330 + 0 + 2 + 1 + 321 = 666.

It is not a de Polignac number, because 213213330021321 - 2²² = 213213325827017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213213330021361) 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 11 ways as a sum of consecutive naturals, for example, 1692169285821 + ... + 1692169285946.

It is an arithmetic number, because the mean of its divisors is an integer number (29330934288656).

Almost surely, 2^{213213330021321} is an apocalyptic number.

213213330021321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

213213330021321 is a deficient number, since it is larger than the sum of its proper divisors (138757881442551).

213213330021321 is a wasteful number, since it uses less digits than its factorization.

213213330021321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3384338571780 (or 3384338571777 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 213213330021321 its reverse (123120033312312), we get a palindrome (336333363333633).

The spelling of 213213330021321 in words is "two hundred thirteen trillion, two hundred thirteen billion, three hundred thirty million, twenty-one thousand, three hundred twenty-one".