2121083603 has 4 divisors (see below), whose sum is σ = 2121181440. Its totient is φ = 2120985768.

The previous prime is 2121083593. The next prime is 2121083611. The reversal of 2121083603 is 3063801212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2121083603 - 2⁸ = 2121083347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121083663) 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 3 ways as a sum of consecutive naturals, for example, 275 + ... + 65132.

It is an arithmetic number, because the mean of its divisors is an integer number (530295360).

Almost surely, 2^2121083603 is an apocalyptic number.

2121083603 is a deficient number, since it is larger than the sum of its proper divisors (97837).

2121083603 is an equidigital number, since it uses as much as digits as its factorization.

2121083603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97836.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2121083603 is about 46055.2234062544. The cubic root of 2121083603 is about 1284.8504931864.

Adding to 2121083603 its reverse (3063801212), we get a palindrome (5184884815).

The spelling of 2121083603 in words is "two billion, one hundred twenty-one million, eighty-three thousand, six hundred three".