23221333 has 8 divisors (see below), whose sum is σ = 23826528. Its totient is φ = 22619184.

The previous prime is 23221327. The next prime is 23221349. The reversal of 23221333 is 33312232.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23221333 - 2⁵ = 23221301 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23221333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23221733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27666 + ... + 28492.

It is an arithmetic number, because the mean of its divisors is an integer number (2978316).

Almost surely, 2^23221333 is an apocalyptic number.

It is an amenable number.

23221333 is a deficient number, since it is larger than the sum of its proper divisors (605195).

23221333 is an equidigital number, since it uses as much as digits as its factorization.

23221333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523.

The product of its digits is 648, while the sum is 19.

The square root of 23221333 is about 4818.8518342028. The cubic root of 23221333 is about 285.2960215511.

Adding to 23221333 its reverse (33312232), we get a palindrome (56533565).

It can be divided in two parts, 2322 and 1333, that added together give a triangular number (3655 = T₈₅).

The spelling of 23221333 in words is "twenty-three million, two hundred twenty-one thousand, three hundred thirty-three".