2123443321 has 8 divisors (see below), whose sum is σ = 2150764704. Its totient is φ = 2096290560.

The previous prime is 2123443319. The next prime is 2123443349. The reversal of 2123443321 is 1233443212.

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

It is a cyclic number.

It is not a de Polignac number, because 2123443321 - 2¹ = 2123443319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2123440321) 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 7 ways as a sum of consecutive naturals, for example, 16711 + ... + 67276.

It is an arithmetic number, because the mean of its divisors is an integer number (268845588).

Almost surely, 2^2123443321 is an apocalyptic number.

It is an amenable number.

2123443321 is a deficient number, since it is larger than the sum of its proper divisors (27321383).

2123443321 is a wasteful number, since it uses less digits than its factorization.

2123443321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84311.

The product of its digits is 3456, while the sum is 25.

The square root of 2123443321 is about 46080.8346387085. The cubic root of 2123443321 is about 1285.3267845179.

Adding to 2123443321 its reverse (1233443212), we get a palindrome (3356886533).

The spelling of 2123443321 in words is "two billion, one hundred twenty-three million, four hundred forty-three thousand, three hundred twenty-one".