12012121222313 has 4 divisors (see below), whose sum is σ = 12092739485700. Its totient is φ = 11931502958928.

The previous prime is 12012121222279. The next prime is 12012121222331. The reversal of 12012121222313 is 31322212121021.

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 5347323255184 + 6664797967129 = 2312428^2 + 2581627^2 .

It is a cyclic number.

It is not a de Polignac number, because 12012121222313 - 2³² = 12007826255017 is a prime.

It is a super-2 number, since 2×12012121222313² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12012121222363) 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, 40309131470 + ... + 40309131767.

It is an arithmetic number, because the mean of its divisors is an integer number (3023184871425).

Almost surely, 2^{12012121222313} is an apocalyptic number.

It is an amenable number.

12012121222313 is a deficient number, since it is larger than the sum of its proper divisors (80618263387).

12012121222313 is an equidigital number, since it uses as much as digits as its factorization.

12012121222313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80618263386.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 12012121222313 its reverse (31322212121021), we get a palindrome (43334333343334).

The spelling of 12012121222313 in words is "twelve trillion, twelve billion, one hundred twenty-one million, two hundred twenty-two thousand, three hundred thirteen".