233221231220 has 24 divisors (see below), whose sum is σ = 489798205344. Its totient is φ = 93282088736.

The previous prime is 233221231219. The next prime is 233221231231. The reversal of 233221231220 is 22132122332.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 95954 + ... + 689673.

It is an arithmetic number, because the mean of its divisors is an integer number (20408258556).

Almost surely, 2^233221231220 is an apocalyptic number.

233221231220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

233221231220 is an abundant number, since it is smaller than the sum of its proper divisors (256576974124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

233221231220 is a wasteful number, since it uses less digits than its factorization.

233221231220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800479 (or 800477 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 233221231220 its reverse (22132122332), we get a palindrome (255353353552).

The spelling of 233221231220 in words is "two hundred thirty-three billion, two hundred twenty-one million, two hundred thirty-one thousand, two hundred twenty".