23121181512132 has 48 divisors (see below), whose sum is σ = 60883361985600. Its totient is φ = 6764817996160.

The previous prime is 23121181512059. The next prime is 23121181512139. The reversal of 23121181512132 is 23121518112132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 23121181512093 and 23121181512102.

It is not an unprimeable number, because it can be changed into a prime (23121181512139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3020004207 + ... + 3020011862.

It is an arithmetic number, because the mean of its divisors is an integer number (1268403374700).

Almost surely, 2^{23121181512132} is an apocalyptic number.

23121181512132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

23121181512132 is an abundant number, since it is smaller than the sum of its proper divisors (37762180473468).

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

23121181512132 is a wasteful number, since it uses less digits than its factorization.

23121181512132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6040016116 (or 6040016114 counting only the distinct ones).

The product of its digits is 5760, while the sum is 33.

Adding to 23121181512132 its reverse (23121518112132), we get a palindrome (46242699624264).

The spelling of 23121181512132 in words is "twenty-three trillion, one hundred twenty-one billion, one hundred eighty-one million, five hundred twelve thousand, one hundred thirty-two".