2124244321 has 4 divisors (see below), whose sum is σ = 2139749892. Its totient is φ = 2108738752.

The previous prime is 2124244307. The next prime is 2124244361. The reversal of 2124244321 is 1234424212.

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 1257766225 + 866478096 = 35465^2 + 29436^2 .

It is a cyclic number.

It is not a de Polignac number, because 2124244321 - 2¹⁹ = 2123720033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2124244361) 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, 7752580 + ... + 7752853.

It is an arithmetic number, because the mean of its divisors is an integer number (534937473).

Almost surely, 2^2124244321 is an apocalyptic number.

It is an amenable number.

2124244321 is a deficient number, since it is larger than the sum of its proper divisors (15505571).

2124244321 is a wasteful number, since it uses less digits than its factorization.

2124244321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15505570.

The product of its digits is 3072, while the sum is 25.

The square root of 2124244321 is about 46089.5250680673. The cubic root of 2124244321 is about 1285.4883801234.

Adding to 2124244321 its reverse (1234424212), we get a palindrome (3358668533).

The spelling of 2124244321 in words is "two billion, one hundred twenty-four million, two hundred forty-four thousand, three hundred twenty-one".