233321031221 has 8 divisors (see below), whose sum is σ = 234307167360. Its totient is φ = 232336923552.

The previous prime is 233321031193. The next prime is 233321031233. The reversal of 233321031221 is 122130123332.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-233321031221 is a prime.

It is a super-2 number, since 2×233321031221² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233321031121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276365 + ... + 736898.

It is an arithmetic number, because the mean of its divisors is an integer number (29288395920).

Almost surely, 2^233321031221 is an apocalyptic number.

It is an amenable number.

233321031221 is a deficient number, since it is larger than the sum of its proper divisors (986136139).

233321031221 is a wasteful number, since it uses less digits than its factorization.

233321031221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014235.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 233321031221 its reverse (122130123332), we get a palindrome (355451154553).

The spelling of 233321031221 in words is "two hundred thirty-three billion, three hundred twenty-one million, thirty-one thousand, two hundred twenty-one".