233133223021 has 8 divisors (see below), whose sum is σ = 237541560984. Its totient is φ = 228725240640.

The previous prime is 233133223013. The next prime is 233133223031. The reversal of 233133223021 is 120322331332.

It can be written as a sum of positive squares in 4 ways, for example, as 135857850921 + 97275372100 = 368589^2 + 311890^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 233133223021 - 2³ = 233133223013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233133223031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1500991 + ... + 1649011.

It is an arithmetic number, because the mean of its divisors is an integer number (29692695123).

Almost surely, 2^233133223021 is an apocalyptic number.

It is an amenable number.

233133223021 is a deficient number, since it is larger than the sum of its proper divisors (4408337963).

233133223021 is a wasteful number, since it uses less digits than its factorization.

233133223021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177791.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 233133223021 its reverse (120322331332), we get a palindrome (353455554353).

The spelling of 233133223021 in words is "two hundred thirty-three billion, one hundred thirty-three million, two hundred twenty-three thousand, twenty-one".