2120152321 has 4 divisors (see below), whose sum is σ = 2423031232. Its totient is φ = 1817273412.

The previous prime is 2120152291. The next prime is 2120152327. The reversal of 2120152321 is 1232510212.

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 a cyclic number.

It is not a de Polignac number, because 2120152321 - 2²¹ = 2118055169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120152327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151439445 + ... + 151439458.

It is an arithmetic number, because the mean of its divisors is an integer number (605757808).

Almost surely, 2^2120152321 is an apocalyptic number.

It is an amenable number.

2120152321 is a deficient number, since it is larger than the sum of its proper divisors (302878911).

2120152321 is an equidigital number, since it uses as much as digits as its factorization.

2120152321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302878910.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 2120152321 is about 46045.1118035346. Note that the first 3 decimals coincide. The cubic root of 2120152321 is about 1284.6624237019.

Adding to 2120152321 its reverse (1232510212), we get a palindrome (3352662533).

The spelling of 2120152321 in words is "two billion, one hundred twenty million, one hundred fifty-two thousand, three hundred twenty-one".