2121243303 has 8 divisors (see below), whose sum is σ = 2828690416. Its totient is φ = 1413979200.

The previous prime is 2121243283. The next prime is 2121243331. The reversal of 2121243303 is 3033421212.

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

It is not a de Polignac number, because 2121243303 - 2¹² = 2121239207 is a prime.

It is a super-3 number, since 3×2121243303³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2121243303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121243373) 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, 15928 + ... + 67053.

It is an arithmetic number, because the mean of its divisors is an integer number (353586302).

Almost surely, 2^2121243303 is an apocalyptic number.

2121243303 is a deficient number, since it is larger than the sum of its proper divisors (707447113).

2121243303 is an equidigital number, since it uses as much as digits as its factorization.

2121243303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91505.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 2121243303 is about 46056.9571617579. The cubic root of 2121243303 is about 1284.8827385718.

Adding to 2121243303 its reverse (3033421212), we get a palindrome (5154664515).

The spelling of 2121243303 in words is "two billion, one hundred twenty-one million, two hundred forty-three thousand, three hundred three".