2103023221 has 4 divisors (see below), whose sum is σ = 2264794252. Its totient is φ = 1941252192.

The previous prime is 2103023191. The next prime is 2103023257. The reversal of 2103023221 is 1223203012.

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

It can be written as a sum of positive squares in 2 ways, for example, as 379860100 + 1723163121 = 19490^2 + 41511^2 .

It is a cyclic number.

It is not a de Polignac number, because 2103023221 - 2¹⁷ = 2102892149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2103023195 and 2103023204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103023281) 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, 80885496 + ... + 80885521.

It is an arithmetic number, because the mean of its divisors is an integer number (566198563).

Almost surely, 2^2103023221 is an apocalyptic number.

It is an amenable number.

2103023221 is a deficient number, since it is larger than the sum of its proper divisors (161771031).

2103023221 is a wasteful number, since it uses less digits than its factorization.

2103023221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161771030.

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

The square root of 2103023221 is about 45858.7311315959. The cubic root of 2103023221 is about 1281.1933899842.

Adding to 2103023221 its reverse (1223203012), we get a palindrome (3326226233).

The spelling of 2103023221 in words is "two billion, one hundred three million, twenty-three thousand, two hundred twenty-one".