2121443203 has 16 divisors (see below), whose sum is σ = 2416905216. Its totient is φ = 1843219840.

The previous prime is 2121443201. The next prime is 2121443237. The reversal of 2121443203 is 3023441212.

It is not a de Polignac number, because 2121443203 - 2¹ = 2121443201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121443201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 397851 + ... + 403147.

It is an arithmetic number, because the mean of its divisors is an integer number (151056576).

Almost surely, 2^2121443203 is an apocalyptic number.

2121443203 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2121443203 is a deficient number, since it is larger than the sum of its proper divisors (295462013).

2121443203 is a wasteful number, since it uses less digits than its factorization.

2121443203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6914.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 2121443203 is about 46059.1272496560. The cubic root of 2121443203 is about 1284.9230985486.

Adding to 2121443203 its reverse (3023441212), we get a palindrome (5144884415).

The spelling of 2121443203 in words is "two billion, one hundred twenty-one million, four hundred forty-three thousand, two hundred three".