2120343321 has 4 divisors (see below), whose sum is σ = 2827124432. Its totient is φ = 1413562212.

The previous prime is 2120343317. The next prime is 2120343353. The reversal of 2120343321 is 1233430212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2120343321 - 2² = 2120343317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120343371) 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 3 ways as a sum of consecutive naturals, for example, 353390551 + ... + 353390556.

It is an arithmetic number, because the mean of its divisors is an integer number (706781108).

Almost surely, 2^2120343321 is an apocalyptic number.

It is an amenable number.

2120343321 is a deficient number, since it is larger than the sum of its proper divisors (706781111).

2120343321 is an equidigital number, since it uses as much as digits as its factorization.

2120343321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706781110.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 2120343321 is about 46047.1858097756. The cubic root of 2120343321 is about 1284.7010000426.

Adding to 2120343321 its reverse (1233430212), we get a palindrome (3353773533).

The spelling of 2120343321 in words is "two billion, one hundred twenty million, three hundred forty-three thousand, three hundred twenty-one".