2133212321 has 4 divisors (see below), whose sum is σ = 2143322544. Its totient is φ = 2123102100.

The previous prime is 2133212293. The next prime is 2133212339. The reversal of 2133212321 is 1232123312.

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 2133212321 - 2¹⁴ = 2133195937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2133212293 and 2133212302.

It is not an unprimeable number, because it can be changed into a prime (2133212371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5054795 + ... + 5055216.

It is an arithmetic number, because the mean of its divisors is an integer number (535830636).

Almost surely, 2^2133212321 is an apocalyptic number.

It is an amenable number.

2133212321 is a deficient number, since it is larger than the sum of its proper divisors (10110223).

2133212321 is a wasteful number, since it uses less digits than its factorization.

2133212321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10110222.

The product of its digits is 432, while the sum is 20.

The square root of 2133212321 is about 46186.7115196568. The cubic root of 2133212321 is about 1287.2948381549.

Adding to 2133212321 its reverse (1232123312), we get a palindrome (3365335633).

The spelling of 2133212321 in words is "two billion, one hundred thirty-three million, two hundred twelve thousand, three hundred twenty-one".