131212241224321 has 48 divisors (see below), whose sum is σ = 140495071751040. Its totient is φ = 122202444026880.

The previous prime is 131212241224307. The next prime is 131212241224373. The reversal of 131212241224321 is 123422142212131.

It is a happy number.

It is not a de Polignac number, because 131212241224321 - 2¹¹ = 131212241222273 is a prime.

It is a super-2 number, since 2×131212241224321² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131212241224621) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48364260061 + ... + 48364262773.

It is an arithmetic number, because the mean of its divisors is an integer number (2926980661480).

Almost surely, 2^{131212241224321} is an apocalyptic number.

It is an amenable number.

131212241224321 is a deficient number, since it is larger than the sum of its proper divisors (9282830526719).

131212241224321 is an equidigital number, since it uses as much as digits as its factorization.

131212241224321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4266 (or 4193 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

Adding to 131212241224321 its reverse (123422142212131), we get a palindrome (254634383436452).

The spelling of 131212241224321 in words is "one hundred thirty-one trillion, two hundred twelve billion, two hundred forty-one million, two hundred twenty-four thousand, three hundred twenty-one".