23223133221 has 16 divisors (see below), whose sum is σ = 31091088000. Its totient is φ = 15418744128.

The previous prime is 23223133201. The next prime is 23223133229. The reversal of 23223133221 is 12233132232.

It is not a de Polignac number, because 23223133221 - 2¹⁹ = 23222608933 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23223133191 and 23223133200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23223133229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 865215 + ... + 891651.

It is an arithmetic number, because the mean of its divisors is an integer number (1943193000).

Almost surely, 2^23223133221 is an apocalyptic number.

It is an amenable number.

23223133221 is a deficient number, since it is larger than the sum of its proper divisors (7867954779).

23223133221 is a wasteful number, since it uses less digits than its factorization.

23223133221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27628.

The product of its digits is 2592, while the sum is 24.

Adding to 23223133221 its reverse (12233132232), we get a palindrome (35456265453).

The spelling of 23223133221 in words is "twenty-three billion, two hundred twenty-three million, one hundred thirty-three thousand, two hundred twenty-one".