12131231132000 has 96 divisors (see below), whose sum is σ = 29811028744224. Its totient is φ = 4851744576000.

The previous prime is 12131231131991. The next prime is 12131231132017. The reversal of 12131231132000 is 23113213121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26093579 + ... + 26554421.

It is an arithmetic number, because the mean of its divisors is an integer number (310531549419).

Almost surely, 2^{12131231132000} is an apocalyptic number.

12131231132000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12131231132000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14905514372112).

12131231132000 is an abundant number, since it is smaller than the sum of its proper divisors (17679797612224).

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

12131231132000 is an equidigital number, since it uses as much as digits as its factorization.

12131231132000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467449 (or 467431 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 12131231132000 its reverse (23113213121), we get a palindrome (12154344345121).

The spelling of 12131231132000 in words is "twelve trillion, one hundred thirty-one billion, two hundred thirty-one million, one hundred thirty-two thousand".