12221103312013 has 4 divisors (see below), whose sum is σ = 12255145382880. Its totient is φ = 12187061241148.

The previous prime is 12221103311983. The next prime is 12221103312037. The reversal of 12221103312013 is 31021330112221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12221103312013 is a prime.

It is a super-2 number, since 2×12221103312013² (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 (12221103312043) 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, 17021034895 + ... + 17021035612.

It is an arithmetic number, because the mean of its divisors is an integer number (3063786345720).

Almost surely, 2^{12221103312013} is an apocalyptic number.

It is an amenable number.

12221103312013 is a deficient number, since it is larger than the sum of its proper divisors (34042070867).

12221103312013 is an equidigital number, since it uses as much as digits as its factorization.

12221103312013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34042070866.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 12221103312013 its reverse (31021330112221), we get a palindrome (43242433424234).

The spelling of 12221103312013 in words is "twelve trillion, two hundred twenty-one billion, one hundred three million, three hundred twelve thousand, thirteen".