2121232303 has 8 divisors (see below), whose sum is σ = 2177760816. Its totient is φ = 2065315200.

The previous prime is 2121232291. The next prime is 2121232331. The reversal of 2121232303 is 3032321212.

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 2121232303 - 2²⁹ = 1584361391 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 (2121236303) 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, 145818 + ... + 159703.

It is an arithmetic number, because the mean of its divisors is an integer number (272220102).

Almost surely, 2^2121232303 is an apocalyptic number.

2121232303 is a deficient number, since it is larger than the sum of its proper divisors (56528513).

2121232303 is a wasteful number, since it uses less digits than its factorization.

2121232303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305705.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 2121232303 is about 46056.8377442481. The cubic root of 2121232303 is about 1284.8805175890.

Adding to 2121232303 its reverse (3032321212), we get a palindrome (5153553515).

The spelling of 2121232303 in words is "two billion, one hundred twenty-one million, two hundred thirty-two thousand, three hundred three".