2121383 has 4 divisors (see below), whose sum is σ = 2314248. Its totient is φ = 1928520.

The previous prime is 2121377. The next prime is 2121389. The reversal of 2121383 is 3831212.

2121383 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2121377) and next prime (2121389).

It is not a de Polignac number, because 2121383 - 2⁴ = 2121367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96416 + ... + 96437.

It is an arithmetic number, because the mean of its divisors is an integer number (578562).

2^2121383 is an apocalyptic number.

2121383 is a deficient number, since it is larger than the sum of its proper divisors (192865).

2121383 is a wasteful number, since it uses less digits than its factorization.

2121383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192864.

The product of its digits is 288, while the sum is 20.

The square root of 2121383 is about 1456.4968245760. The cubic root of 2121383 is about 128.4910943779.

Adding to 2121383 its reverse (3831212), we get a palindrome (5952595).

The spelling of 2121383 in words is "two million, one hundred twenty-one thousand, three hundred eighty-three".