212120133321 has 8 divisors (see below), whose sum is σ = 285421586560. Its totient is φ = 140116051152.

The previous prime is 212120133307. The next prime is 212120133343. The reversal of 212120133321 is 123331021212.

212120133321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212120133321 - 2⁷ = 212120133193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212120134321) 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 7 ways as a sum of consecutive naturals, for example, 324342385 + ... + 324343038.

It is an arithmetic number, because the mean of its divisors is an integer number (35677698320).

Almost surely, 2^212120133321 is an apocalyptic number.

It is an amenable number.

212120133321 is a deficient number, since it is larger than the sum of its proper divisors (73301453239).

212120133321 is a wasteful number, since it uses less digits than its factorization.

212120133321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648685535.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 212120133321 its reverse (123331021212), we get a palindrome (335451154533).

The spelling of 212120133321 in words is "two hundred twelve billion, one hundred twenty million, one hundred thirty-three thousand, three hundred twenty-one".