12131443224020 has 24 divisors (see below), whose sum is σ = 25486748594664. Its totient is φ = 4850535799296.

The previous prime is 12131443224007. The next prime is 12131443224077. The reversal of 12131443224020 is 2042234413121.

It can be written as a sum of positive squares in 4 ways, for example, as 1955572902724 + 10175870321296 = 1398418^2 + 3189964^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127544417 + ... + 127639496.

It is an arithmetic number, because the mean of its divisors is an integer number (1061947858111).

Almost surely, 2^{12131443224020} is an apocalyptic number.

12131443224020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12131443224020 is an abundant number, since it is smaller than the sum of its proper divisors (13355305370644).

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

12131443224020 is a wasteful number, since it uses less digits than its factorization.

12131443224020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255186299 (or 255186297 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 12131443224020 its reverse (2042234413121), we get a palindrome (14173677637141).

The spelling of 12131443224020 in words is "twelve trillion, one hundred thirty-one billion, four hundred forty-three million, two hundred twenty-four thousand, twenty".