23203321121 has 4 divisors (see below), whose sum is σ = 23203662000. Its totient is φ = 23202980244.

The previous prime is 23203321087. The next prime is 23203321123. The reversal of 23203321121 is 12112330232.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23203321121 - 2¹⁰ = 23203320097 is a prime.

It is a super-2 number, since 2×23203321121² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23203321093 and 23203321102.

It is not an unprimeable number, because it can be changed into a prime (23203321123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29471 + ... + 217428.

It is an arithmetic number, because the mean of its divisors is an integer number (5800915500).

Almost surely, 2^23203321121 is an apocalyptic number.

It is an amenable number.

23203321121 is a deficient number, since it is larger than the sum of its proper divisors (340879).

23203321121 is an equidigital number, since it uses as much as digits as its factorization.

23203321121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340878.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 23203321121 its reverse (12112330232), we get a palindrome (35315651353).

The spelling of 23203321121 in words is "twenty-three billion, two hundred three million, three hundred twenty-one thousand, one hundred twenty-one".