2121230303 has 8 divisors (see below), whose sum is σ = 2130692016. Its totient is φ = 2111788800.

The previous prime is 2121230257. The next prime is 2121230311. The reversal of 2121230303 is 3030321212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2121230303 - 2²⁰ = 2120181727 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121230203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228788 + ... + 237878.

It is an arithmetic number, because the mean of its divisors is an integer number (266336502).

Almost surely, 2^2121230303 is an apocalyptic number.

2121230303 is a deficient number, since it is larger than the sum of its proper divisors (9461713).

2121230303 is an equidigital number, since it uses as much as digits as its factorization.

2121230303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10105.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 2121230303 is about 46056.8160319404. The cubic root of 2121230303 is about 1284.8801137731.

Adding to 2121230303 its reverse (3030321212), we get a palindrome (5151551515).

Subtracting 2121230303 from its reverse (3030321212), we obtain a palindrome (909090909).

It can be divided in two parts, 21212 and 30303, that added together give a palindrome (51515).

The spelling of 2121230303 in words is "two billion, one hundred twenty-one million, two hundred thirty thousand, three hundred three".