2124321 has 8 divisors (see below), whose sum is σ = 2840640. Its totient is φ = 1412112.

The previous prime is 2124319. The next prime is 2124323. The reversal of 2124321 is 1234212.

It is an interprime number because it is at equal distance from previous prime (2124319) and next prime (2124323).

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

It is not a de Polignac number, because 2124321 - 2¹ = 2124319 is a prime.

It is a super-2 number, since 2×2124321² = 9025479422082, which contains 22 as substring.

It is an Ulam number.

2124321 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2124321.

It is not an unprimeable number, because it can be changed into a prime (2124323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 511 + ... + 2123.

It is an arithmetic number, because the mean of its divisors is an integer number (355080).

2^2124321 is an apocalyptic number.

It is an amenable number.

2124321 is a deficient number, since it is larger than the sum of its proper divisors (716319).

2124321 is a wasteful number, since it uses less digits than its factorization.

2124321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055.

The product of its digits is 96, while the sum is 15.

The square root of 2124321 is about 1457.5050600255. The cubic root of 2124321 is about 128.5503847393.

Adding to 2124321 its reverse (1234212), we get a palindrome (3358533).

It can be divided in two parts, 21 and 24321, that added together give a palindrome (24342).

The spelling of 2124321 in words is "two million, one hundred twenty-four thousand, three hundred twenty-one".