2121332300321 has 16 divisors (see below), whose sum is σ = 2314087238400. Its totient is φ = 1932816532608.

The previous prime is 2121332300179. The next prime is 2121332300369. The reversal of 2121332300321 is 1230032331212.

It is a de Polignac number, because none of the positive numbers 2^k-2121332300321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121332300821) 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 in 15 ways as a sum of consecutive naturals, for example, 3342725 + ... + 3926381.

It is an arithmetic number, because the mean of its divisors is an integer number (144630452400).

Almost surely, 2^{2121332300321} is an apocalyptic number.

It is an amenable number.

2121332300321 is a deficient number, since it is larger than the sum of its proper divisors (192754938079).

2121332300321 is a wasteful number, since it uses less digits than its factorization.

2121332300321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587288.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 2121332300321 its reverse (1230032331212), we get a palindrome (3351364631533).

The spelling of 2121332300321 in words is "two trillion, one hundred twenty-one billion, three hundred thirty-two million, three hundred thousand, three hundred twenty-one".