13231212321120 has 96 divisors (see below), whose sum is σ = 42180467357952. Its totient is φ = 3485813356032.

The previous prime is 13231212321077. The next prime is 13231212321127. The reversal of 13231212321120 is 2112321213231.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231212321127) 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, 166014532 + ... + 166094211.

It is an arithmetic number, because the mean of its divisors is an integer number (439379868312).

Almost surely, 2^{13231212321120} is an apocalyptic number.

13231212321120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13231212321120 is an abundant number, since it is smaller than the sum of its proper divisors (28949255036832).

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

13231212321120 is a wasteful number, since it uses less digits than its factorization.

13231212321120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332108844 (or 332108836 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 13231212321120 its reverse (2112321213231), we get a palindrome (15343533534351).

The spelling of 13231212321120 in words is "thirteen trillion, two hundred thirty-one billion, two hundred twelve million, three hundred twenty-one thousand, one hundred twenty".