23121212232 has 32 divisors (see below), whose sum is σ = 57852802080. Its totient is φ = 7700434560.

The previous prime is 23121212221. The next prime is 23121212239. The reversal of 23121212232 is 23221212132.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 23121212199 and 23121212208.

It is not an unprimeable number, because it can be changed into a prime (23121212239) 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, 386269 + ... + 442092.

It is an arithmetic number, because the mean of its divisors is an integer number (1807900065).

Almost surely, 2^23121212232 is an apocalyptic number.

It is an amenable number.

23121212232 is an abundant number, since it is smaller than the sum of its proper divisors (34731589848).

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

23121212232 is a wasteful number, since it uses less digits than its factorization.

23121212232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829533 (or 829529 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

Adding to 23121212232 its reverse (23221212132), we get a palindrome (46342424364).

The spelling of 23121212232 in words is "twenty-three billion, one hundred twenty-one million, two hundred twelve thousand, two hundred thirty-two".