233121223201 has 4 divisors (see below), whose sum is σ = 241159886100. Its totient is φ = 225082560304.

The previous prime is 233121223171. The next prime is 233121223219. The reversal of 233121223201 is 102322121332.

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 38661390625 + 194459832576 = 196625^2 + 440976^2 .

It is a cyclic number.

It is not a de Polignac number, because 233121223201 - 2⁹ = 233121222689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (233121223001) 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 3 ways as a sum of consecutive naturals, for example, 4019331406 + ... + 4019331463.

It is an arithmetic number, because the mean of its divisors is an integer number (60289971525).

Almost surely, 2^233121223201 is an apocalyptic number.

It is an amenable number.

233121223201 is a deficient number, since it is larger than the sum of its proper divisors (8038662899).

233121223201 is an equidigital number, since it uses as much as digits as its factorization.

233121223201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8038662898.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 233121223201 its reverse (102322121332), we get a palindrome (335443344533).

The spelling of 233121223201 in words is "two hundred thirty-three billion, one hundred twenty-one million, two hundred twenty-three thousand, two hundred one".