23233221 has 24 divisors (see below), whose sum is σ = 36772320. Its totient is φ = 14018400.

The previous prime is 23233213. The next prime is 23233283. The reversal of 23233221 is 12233232.

It is a happy number.

It is not a de Polignac number, because 23233221 - 2³ = 23233213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23233194 and 23233203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23233211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32415 + ... + 33123.

It is an arithmetic number, because the mean of its divisors is an integer number (1532180).

Almost surely, 2^23233221 is an apocalyptic number.

It is an amenable number.

23233221 is a deficient number, since it is larger than the sum of its proper divisors (13539099).

23233221 is a wasteful number, since it uses less digits than its factorization.

23233221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057 (or 1054 counting only the distinct ones).

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

The square root of 23233221 is about 4820.0851652227. The cubic root of 23233221 is about 285.3446983505.

Adding to 23233221 its reverse (12233232), we get a palindrome (35466453).

The spelling of 23233221 in words is "twenty-three million, two hundred thirty-three thousand, two hundred twenty-one".