2120103321 has 16 divisors (see below), whose sum is σ = 3231283200. Its totient is φ = 1211244048.

The previous prime is 2120103287. The next prime is 2120103341. The reversal of 2120103321 is 1233010212.

It is not a de Polignac number, because 2120103321 - 2⁶ = 2120103257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2120103321.

It is not an unprimeable number, because it can be changed into a prime (2120103341) 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, 177310 + ... + 188888.

It is an arithmetic number, because the mean of its divisors is an integer number (201955200).

Almost surely, 2^2120103321 is an apocalyptic number.

2120103321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2120103321 is a deficient number, since it is larger than the sum of its proper divisors (1111179879).

2120103321 is a wasteful number, since it uses less digits than its factorization.

2120103321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20308.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2120103321 is about 46044.5797135776. The cubic root of 2120103321 is about 1284.6525267803.

Adding to 2120103321 its reverse (1233010212), we get a palindrome (3353113533).

The spelling of 2120103321 in words is "two billion, one hundred twenty million, one hundred three thousand, three hundred twenty-one".