2121223203 has 24 divisors (see below), whose sum is σ = 3344670576. Its totient is φ = 1284768000.

The previous prime is 2121223201. The next prime is 2121223207. The reversal of 2121223203 is 3023221212.

It is not a de Polignac number, because 2121223203 - 2¹ = 2121223201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121223201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172351 + ... + 184247.

It is an arithmetic number, because the mean of its divisors is an integer number (139361274).

Almost surely, 2^2121223203 is an apocalyptic number.

2121223203 is a deficient number, since it is larger than the sum of its proper divisors (1223447373).

2121223203 is a wasteful number, since it uses less digits than its factorization.

2121223203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13715 (or 13712 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2121223203 is about 46056.7389531651. The cubic root of 2121223203 is about 1284.8786802247.

Adding to 2121223203 its reverse (3023221212), we get a palindrome (5144444415).

The spelling of 2121223203 in words is "two billion, one hundred twenty-one million, two hundred twenty-three thousand, two hundred three".