131212213001321 has 16 divisors (see below), whose sum is σ = 134455403174400. Its totient is φ = 127971072028800.

The previous prime is 131212213001297. The next prime is 131212213001333. The reversal of 131212213001321 is 123100312212131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 131212213001321 - 2¹⁸ = 131212212739177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131212213001371) 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, 1876274726 + ... + 1876344656.

It is an arithmetic number, because the mean of its divisors is an integer number (8403462698400).

Almost surely, 2^{131212213001321} is an apocalyptic number.

It is an amenable number.

131212213001321 is a deficient number, since it is larger than the sum of its proper divisors (3243190173079).

131212213001321 is an equidigital number, since it uses as much as digits as its factorization.

131212213001321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83920.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 131212213001321 its reverse (123100312212131), we get a palindrome (254312525213452).

The spelling of 131212213001321 in words is "one hundred thirty-one trillion, two hundred twelve billion, two hundred thirteen million, one thousand, three hundred twenty-one".