13231021324212 has 72 divisors (see below), whose sum is σ = 34598993356200. Its totient is φ = 4258181829888.

The previous prime is 13231021324127. The next prime is 13231021324217. The reversal of 13231021324212 is 21242312013231.

13231021324212 is a `hidden beast` number, since 1 + 3 + 2 + 3 + 102 + 132 + 421 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2818550753316 + 10412470570896 = 1678854^2 + 3226836^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231021324217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92047614 + ... + 92191242.

Almost surely, 2^{13231021324212} is an apocalyptic number.

13231021324212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13231021324212 is an abundant number, since it is smaller than the sum of its proper divisors (21367972031988).

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

13231021324212 is a wasteful number, since it uses less digits than its factorization.

13231021324212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231905 (or 231900 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 13231021324212 its reverse (21242312013231), we get a palindrome (34473333337443).

The spelling of 13231021324212 in words is "thirteen trillion, two hundred thirty-one billion, twenty-one million, three hundred twenty-four thousand, two hundred twelve".