233221010221 has 4 divisors (see below), whose sum is σ = 235841471100. Its totient is φ = 230600549344.

The previous prime is 233221010219. The next prime is 233221010227. The reversal of 233221010221 is 122010122332.

233221010221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 92735475625 + 140485534596 = 304525^2 + 374814^2 .

It is a cyclic number.

It is not a de Polignac number, because 233221010221 - 2¹ = 233221010219 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 (233221010227) 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 3 ways as a sum of consecutive naturals, for example, 1310230306 + ... + 1310230483.

It is an arithmetic number, because the mean of its divisors is an integer number (58960367775).

Almost surely, 2^233221010221 is an apocalyptic number.

It is an amenable number.

233221010221 is a deficient number, since it is larger than the sum of its proper divisors (2620460879).

233221010221 is an equidigital number, since it uses as much as digits as its factorization.

233221010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2620460878.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 233221010221 its reverse (122010122332), we get a palindrome (355231132553).

The spelling of 233221010221 in words is "two hundred thirty-three billion, two hundred twenty-one million, ten thousand, two hundred twenty-one".