12131313021021 has 8 divisors (see below), whose sum is σ = 16200718078144. Its totient is φ = 8074724988960.

The previous prime is 12131313021001. The next prime is 12131313021127. The reversal of 12131313021021 is 12012031313121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12131313021021 - 2⁹ = 12131313020509 is a prime.

It is a super-2 number, since 2×12131313021021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131313021001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3204254056 + ... + 3204257841.

It is an arithmetic number, because the mean of its divisors is an integer number (2025089759768).

Almost surely, 2^{12131313021021} is an apocalyptic number.

It is an amenable number.

12131313021021 is a deficient number, since it is larger than the sum of its proper divisors (4069405057123).

12131313021021 is an equidigital number, since it uses as much as digits as its factorization.

12131313021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6408512531.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 12131313021021 its reverse (12012031313121), we get a palindrome (24143344334142).

The spelling of 12131313021021 in words is "twelve trillion, one hundred thirty-one billion, three hundred thirteen million, twenty-one thousand, twenty-one".