23221233 has 24 divisors (see below), whose sum is σ = 38603136. Its totient is φ = 13176000.

The previous prime is 23221223. The next prime is 23221241. The reversal of 23221233 is 33212232.

It is a happy number.

It is not a de Polignac number, because 23221233 - 2⁶ = 23221169 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23221223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8293 + ... + 10733.

It is an arithmetic number, because the mean of its divisors is an integer number (1608464).

Almost surely, 2^23221233 is an apocalyptic number.

It is an amenable number.

23221233 is a deficient number, since it is larger than the sum of its proper divisors (15381903).

23221233 is a wasteful number, since it uses less digits than its factorization.

23221233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2605 (or 2602 counting only the distinct ones).

The product of its digits is 432, while the sum is 18.

The square root of 23221233 is about 4818.8414582760. The cubic root of 23221233 is about 285.2956120190.

Adding to 23221233 its reverse (33212232), we get a palindrome (56433465).

Subtracting 23221233 from its reverse (33212232), we obtain a palindrome (9990999).

The spelling of 23221233 in words is "twenty-three million, two hundred twenty-one thousand, two hundred thirty-three".