233121103220 has 48 divisors (see below), whose sum is σ = 518034279168. Its totient is φ = 87937893120.

The previous prime is 233121103219. The next prime is 233121103249. The reversal of 233121103220 is 22301121332.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 233121103192 and 233121103201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3536249 + ... + 3601568.

It is an arithmetic number, because the mean of its divisors is an integer number (10792380816).

Almost surely, 2^233121103220 is an apocalyptic number.

233121103220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

233121103220 is an abundant number, since it is smaller than the sum of its proper divisors (284913175948).

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

233121103220 is a wasteful number, since it uses less digits than its factorization.

233121103220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7137920 (or 7137918 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 233121103220 its reverse (22301121332), we get a palindrome (255422224552).

The spelling of 233121103220 in words is "two hundred thirty-three billion, one hundred twenty-one million, one hundred three thousand, two hundred twenty".