2103313221 has 12 divisors (see below), whose sum is σ = 3038526348. Its totient is φ = 1402020864.

The previous prime is 2103313217. The next prime is 2103313271. The reversal of 2103313221 is 1223133012.

2103313221 is a `hidden beast` number, since 2 + 10 + 331 + 322 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 386122500 + 1717190721 = 19650^2 + 41439^2 .

It is not a de Polignac number, because 2103313221 - 2² = 2103313217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2103313194 and 2103313203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103313271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100741 + ... + 119813.

It is an arithmetic number, because the mean of its divisors is an integer number (253210529).

Almost surely, 2^2103313221 is an apocalyptic number.

It is an amenable number.

2103313221 is a deficient number, since it is larger than the sum of its proper divisors (935213127).

2103313221 is a wasteful number, since it uses less digits than its factorization.

2103313221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31332 (or 31329 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2103313221 is about 45861.8929068568. The cubic root of 2103313221 is about 1281.2522780654.

Adding to 2103313221 its reverse (1223133012), we get a palindrome (3326446233).

The spelling of 2103313221 in words is "two billion, one hundred three million, three hundred thirteen thousand, two hundred twenty-one".