233212133021 has 4 divisors (see below), whose sum is σ = 266528152032. Its totient is φ = 199896114012.

The previous prime is 233212133017. The next prime is 233212133041. The reversal of 233212133021 is 120331212332.

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 not a de Polignac number, because 233212133021 - 2² = 233212133017 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 (233212133041) 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, 16658009495 + ... + 16658009508.

It is an arithmetic number, because the mean of its divisors is an integer number (66632038008).

Almost surely, 2^233212133021 is an apocalyptic number.

It is an amenable number.

233212133021 is a deficient number, since it is larger than the sum of its proper divisors (33316019011).

233212133021 is an equidigital number, since it uses as much as digits as its factorization.

233212133021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33316019010.

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

Adding to 233212133021 its reverse (120331212332), we get a palindrome (353543345353).

The spelling of 233212133021 in words is "two hundred thirty-three billion, two hundred twelve million, one hundred thirty-three thousand, twenty-one".