233133212321 has 4 divisors (see below), whose sum is σ = 233135173632. Its totient is φ = 233131251012.

The previous prime is 233133212303. The next prime is 233133212407. The reversal of 233133212321 is 123212331332.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-233133212321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (233133212821) 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, 790001 + ... + 1044206.

It is an arithmetic number, because the mean of its divisors is an integer number (58283793408).

Almost surely, 2^233133212321 is an apocalyptic number.

It is an amenable number.

233133212321 is a deficient number, since it is larger than the sum of its proper divisors (1961311).

233133212321 is a wasteful number, since it uses less digits than its factorization.

233133212321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961310.

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

Adding to 233133212321 its reverse (123212331332), we get a palindrome (356345543653).

The spelling of 233133212321 in words is "two hundred thirty-three billion, one hundred thirty-three million, two hundred twelve thousand, three hundred twenty-one".