2120323133 has 4 divisors (see below), whose sum is σ = 2121005628. Its totient is φ = 2119640640.

The previous prime is 2120323123. The next prime is 2120323157. The reversal of 2120323133 is 3313230212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4507129 + 2115816004 = 2123^2 + 45998^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120323133 - 2¹⁶ = 2120257597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120323123) 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, 336566 + ... + 342807.

It is an arithmetic number, because the mean of its divisors is an integer number (530251407).

Almost surely, 2^2120323133 is an apocalyptic number.

It is an amenable number.

2120323133 is a deficient number, since it is larger than the sum of its proper divisors (682495).

2120323133 is an equidigital number, since it uses as much as digits as its factorization.

2120323133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682494.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 2120323133 is about 46046.9665993320. The cubic root of 2120323133 is about 1284.6969227742.

Adding to 2120323133 its reverse (3313230212), we get a palindrome (5433553345).

The spelling of 2120323133 in words is "two billion, one hundred twenty million, three hundred twenty-three thousand, one hundred thirty-three".