2103313121 has 16 divisors (see below), whose sum is σ = 2643777024. Its totient is φ = 1628748864.

The previous prime is 2103313081. The next prime is 2103313193. The reversal of 2103313121 is 1213133012.

It is a cyclic number.

It is not a de Polignac number, because 2103313121 - 2¹⁴ = 2103296737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2103313121.

It is not an unprimeable number, because it can be changed into a prime (2103313021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241610 + ... + 250163.

It is an arithmetic number, because the mean of its divisors is an integer number (165236064).

Almost surely, 2^2103313121 is an apocalyptic number.

It is an amenable number.

2103313121 is a deficient number, since it is larger than the sum of its proper divisors (540463903).

2103313121 is a wasteful number, since it uses less digits than its factorization.

2103313121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491840.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 2103313121 is about 45861.8918166270. The cubic root of 2103313121 is about 1281.2522577601.

Adding to 2103313121 its reverse (1213133012), we get a palindrome (3316446133).

The spelling of 2103313121 in words is "two billion, one hundred three million, three hundred thirteen thousand, one hundred twenty-one".