2121344223 has 16 divisors (see below), whose sum is σ = 2899260000. Its totient is φ = 1378872320.

The previous prime is 2121344219. The next prime is 2121344227. The reversal of 2121344223 is 3224431212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2121344219) and next prime (2121344227).

It is a cyclic number.

It is not a de Polignac number, because 2121344223 - 2² = 2121344219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121344193 and 2121344202.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235303 + ... + 244151.

It is an arithmetic number, because the mean of its divisors is an integer number (181203750).

Almost surely, 2^2121344223 is an apocalyptic number.

2121344223 is a deficient number, since it is larger than the sum of its proper divisors (777915777).

2121344223 is a wasteful number, since it uses less digits than its factorization.

2121344223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10842.

The product of its digits is 2304, while the sum is 24.

The square root of 2121344223 is about 46058.0527486779. The cubic root of 2121344223 is about 1284.9031147209.

Adding to 2121344223 its reverse (3224431212), we get a palindrome (5345775435).

The spelling of 2121344223 in words is "two billion, one hundred twenty-one million, three hundred forty-four thousand, two hundred twenty-three".