233121212033 has 4 divisors (see below), whose sum is σ = 243256916928. Its totient is φ = 222985507140.

The previous prime is 233121212017. The next prime is 233121212087. The reversal of 233121212033 is 330212121332.

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 not a de Polignac number, because 233121212033 - 2⁴ = 233121212017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 10135704871 = 233121212033 / (2 + 3 + 3 + 1 + 2 + 1 + 2 + 1 + 2 + 0 + 3 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (233121212003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5067852413 + ... + 5067852458.

It is an arithmetic number, because the mean of its divisors is an integer number (60814229232).

Almost surely, 2^233121212033 is an apocalyptic number.

233121212033 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

233121212033 is a deficient number, since it is larger than the sum of its proper divisors (10135704895).

233121212033 is a wasteful number, since it uses less digits than its factorization.

233121212033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10135704894.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 233121212033 its reverse (330212121332), we get a palindrome (563333333365).

The spelling of 233121212033 in words is "two hundred thirty-three billion, one hundred twenty-one million, two hundred twelve thousand, thirty-three".