2103221131 has 16 divisors (see below), whose sum is σ = 2520195840. Its totient is φ = 1732626720.

The previous prime is 2103221129. The next prime is 2103221161. The reversal of 2103221131 is 1311223012.

It is not a de Polignac number, because 2103221131 - 2¹ = 2103221129 is a prime.

It is a super-2 number, since 2×2103221131² = 8847078251769838322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2103221161) 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 15 ways as a sum of consecutive naturals, for example, 213960 + ... + 223573.

It is an arithmetic number, because the mean of its divisors is an integer number (157512240).

Almost surely, 2^2103221131 is an apocalyptic number.

2103221131 is a deficient number, since it is larger than the sum of its proper divisors (416974709).

2103221131 is a wasteful number, since it uses less digits than its factorization.

2103221131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437586.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2103221131 is about 45860.8889032910. Note that the first 3 decimals coincide. The cubic root of 2103221131 is about 1281.2335786402.

Adding to 2103221131 its reverse (1311223012), we get a palindrome (3414444143).

The spelling of 2103221131 in words is "two billion, one hundred three million, two hundred twenty-one thousand, one hundred thirty-one".