2121344224 has 24 divisors (see below), whose sum is σ = 4396208040. Its totient is φ = 1004846976.

The previous prime is 2121344219. The next prime is 2121344227. The reversal of 2121344224 is 4224431212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121344227) 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, 1743919 + ... + 1745134.

It is an arithmetic number, because the mean of its divisors is an integer number (183175335).

Almost surely, 2^2121344224 is an apocalyptic number.

It is an amenable number.

2121344224 is an abundant number, since it is smaller than the sum of its proper divisors (2274863816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121344224 is a wasteful number, since it uses less digits than its factorization.

2121344224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3489082 (or 3489074 counting only the distinct ones).

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

The square root of 2121344224 is about 46058.0527595338. The cubic root of 2121344224 is about 1284.9031149228.

Adding to 2121344224 its reverse (4224431212), we get a palindrome (6345775436).

The spelling of 2121344224 in words is "two billion, one hundred twenty-one million, three hundred forty-four thousand, two hundred twenty-four".