233424433221 has 16 divisors (see below), whose sum is σ = 376617573504. Its totient is φ = 125539190784.

The previous prime is 233424433169. The next prime is 233424433247. The reversal of 233424433221 is 122334424332.

It is not a de Polignac number, because 233424433221 - 2²² = 233420238917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233424432221) 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 15 ways as a sum of consecutive naturals, for example, 326924620 + ... + 326925333.

It is an arithmetic number, because the mean of its divisors is an integer number (23538598344).

Almost surely, 2^233424433221 is an apocalyptic number.

233424433221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

233424433221 is a deficient number, since it is larger than the sum of its proper divisors (143193140283).

233424433221 is a wasteful number, since it uses less digits than its factorization.

233424433221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653849980.

The product of its digits is 82944, while the sum is 33.

Adding to 233424433221 its reverse (122334424332), we get a palindrome (355758857553).

The spelling of 233424433221 in words is "two hundred thirty-three billion, four hundred twenty-four million, four hundred thirty-three thousand, two hundred twenty-one".