2101223203 has 4 divisors (see below), whose sum is σ = 2130817968. Its totient is φ = 2071628440.

The previous prime is 2101223143. The next prime is 2101223221. The reversal of 2101223203 is 3023221012.

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 2101223203 - 2⁹ = 2101222691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101223503) 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, 14797276 + ... + 14797417.

It is an arithmetic number, because the mean of its divisors is an integer number (532704492).

Almost surely, 2^2101223203 is an apocalyptic number.

2101223203 is a deficient number, since it is larger than the sum of its proper divisors (29594765).

2101223203 is an equidigital number, since it uses as much as digits as its factorization.

2101223203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29594764.

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

The square root of 2101223203 is about 45839.1012455524. The cubic root of 2101223203 is about 1280.8277529624.

Adding to 2101223203 its reverse (3023221012), we get a palindrome (5124444215).

The spelling of 2101223203 in words is "two billion, one hundred one million, two hundred twenty-three thousand, two hundred three".