12001220100013 has 4 divisors (see below), whose sum is σ = 12001271506560. Its totient is φ = 12001168693468.

The previous prime is 12001220100011. The next prime is 12001220100031. The reversal of 12001220100013 is 31000102210021.

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 not a de Polignac number, because 12001220100013 - 2¹ = 12001220100011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12001220099966 and 12001220100002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001220100011) 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, 25351483 + ... + 25820536.

It is an arithmetic number, because the mean of its divisors is an integer number (3000317876640).

Almost surely, 2^{12001220100013} is an apocalyptic number.

It is an amenable number.

12001220100013 is a deficient number, since it is larger than the sum of its proper divisors (51406547).

12001220100013 is an equidigital number, since it uses as much as digits as its factorization.

12001220100013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51406546.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12001220100013 its reverse (31000102210021), we get a palindrome (43001322310034).

The spelling of 12001220100013 in words is "twelve trillion, one billion, two hundred twenty million, one hundred thousand, thirteen".