2221310203 has 4 divisors (see below), whose sum is σ = 2538640240. Its totient is φ = 1903980168.

The previous prime is 2221310173. The next prime is 2221310213. The reversal of 2221310203 is 3020131222.

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 2221310203 - 2⁵ = 2221310171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221310213) 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, 158665008 + ... + 158665021.

It is an arithmetic number, because the mean of its divisors is an integer number (634660060).

Almost surely, 2^2221310203 is an apocalyptic number.

2221310203 is a deficient number, since it is larger than the sum of its proper divisors (317330037).

2221310203 is an equidigital number, since it uses as much as digits as its factorization.

2221310203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317330036.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2221310203 is about 47130.7776617361. Note that the first 3 decimals coincide. The cubic root of 2221310203 is about 1304.7773342347. Note that the first 3 decimals are identical.

Adding to 2221310203 its reverse (3020131222), we get a palindrome (5241441425).

The spelling of 2221310203 in words is "two billion, two hundred twenty-one million, three hundred ten thousand, two hundred three".