2121102203 has 4 divisors (see below), whose sum is σ = 2313929688. Its totient is φ = 1928274720.

The previous prime is 2121102197. The next prime is 2121102227. The reversal of 2121102203 is 3022011212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2121102203 - 2¹⁴ = 2121085819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121102233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96413726 + ... + 96413747.

It is an arithmetic number, because the mean of its divisors is an integer number (578482422).

Almost surely, 2^2121102203 is an apocalyptic number.

2121102203 is a deficient number, since it is larger than the sum of its proper divisors (192827485).

2121102203 is a wasteful number, since it uses less digits than its factorization.

2121102203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192827484.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2121102203 is about 46055.4253373042. The cubic root of 2121102203 is about 1284.8542488374.

Adding to 2121102203 its reverse (3022011212), we get a palindrome (5143113415).

Subtracting 2121102203 from its reverse (3022011212), we obtain a palindrome (900909009).

The spelling of 2121102203 in words is "two billion, one hundred twenty-one million, one hundred two thousand, two hundred three".