23003120221 has 4 divisors (see below), whose sum is σ = 23003440000. Its totient is φ = 23002800444.

The previous prime is 23003120209. The next prime is 23003120227. The reversal of 23003120221 is 12202130032.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23003120221 - 2¹⁵ = 23003087453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23003120195 and 23003120204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23003120227) 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 3 ways as a sum of consecutive naturals, for example, 4030 + ... + 214528.

It is an arithmetic number, because the mean of its divisors is an integer number (5750860000).

Almost surely, 2^23003120221 is an apocalyptic number.

It is an amenable number.

23003120221 is a deficient number, since it is larger than the sum of its proper divisors (319779).

23003120221 is a wasteful number, since it uses less digits than its factorization.

23003120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319778.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 23003120221 its reverse (12202130032), we get a palindrome (35205250253).

The spelling of 23003120221 in words is "twenty-three billion, three million, one hundred twenty thousand, two hundred twenty-one".