233313231221 has 8 divisors (see below), whose sum is σ = 267907408704. Its totient is φ = 199034982720.

The previous prime is 233313231199. The next prime is 233313231251. The reversal of 233313231221 is 122132313332.

233313231221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 233313231221 - 2³⁰ = 232239489397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233313231251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78980660 + ... + 78983613.

It is an arithmetic number, because the mean of its divisors is an integer number (33488426088).

Almost surely, 2^233313231221 is an apocalyptic number.

It is an amenable number.

233313231221 is a deficient number, since it is larger than the sum of its proper divisors (34594177483).

233313231221 is a wasteful number, since it uses less digits than its factorization.

233313231221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157964491.

The product of its digits is 3888, while the sum is 26.

Adding to 233313231221 its reverse (122132313332), we get a palindrome (355445544553).

The spelling of 233313231221 in words is "two hundred thirty-three billion, three hundred thirteen million, two hundred thirty-one thousand, two hundred twenty-one".