12313013112221 has 4 divisors (see below), whose sum is σ = 12613330505244. Its totient is φ = 12012695719200.

The previous prime is 12313013112217. The next prime is 12313013112233. The reversal of 12313013112221 is 12221131031321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5093371922500 + 7219641189721 = 2256850^2 + 2686939^2 .

It is a cyclic number.

It is not a de Polignac number, because 12313013112221 - 2² = 12313013112217 is a prime.

It is a super-2 number, since 2×12313013112221² (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 (12313013112251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150158696450 + ... + 150158696531.

It is an arithmetic number, because the mean of its divisors is an integer number (3153332626311).

Almost surely, 2^{12313013112221} is an apocalyptic number.

It is an amenable number.

12313013112221 is a deficient number, since it is larger than the sum of its proper divisors (300317393023).

12313013112221 is an equidigital number, since it uses as much as digits as its factorization.

12313013112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300317393022.

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

Adding to 12313013112221 its reverse (12221131031321), we get a palindrome (24534144143542).

The spelling of 12313013112221 in words is "twelve trillion, three hundred thirteen billion, thirteen million, one hundred twelve thousand, two hundred twenty-one".