1212200212013 has 6 divisors (see below), whose sum is σ = 1410110450766. Its totient is φ = 1039028753112.

The previous prime is 1212200212009. The next prime is 1212200212073. The reversal of 1212200212013 is 3102120022121.

It can be written as a sum of positive squares in only one way, i.e., 895818711529 + 316381500484 = 946477^2 + 562478^2 .

It is not a de Polignac number, because 1212200212013 - 2² = 1212200212009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1212200211982 and 1212200212000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212200212073) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12369389870 + ... + 12369389967.

It is an arithmetic number, because the mean of its divisors is an integer number (235018408461).

Almost surely, 2^{1212200212013} is an apocalyptic number.

It is an amenable number.

1212200212013 is a deficient number, since it is larger than the sum of its proper divisors (197910238753).

1212200212013 is an equidigital number, since it uses as much as digits as its factorization.

1212200212013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24738779851 (or 24738779844 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1212200212013 its reverse (3102120022121), we get a palindrome (4314320234134).

The spelling of 1212200212013 in words is "one trillion, two hundred twelve billion, two hundred million, two hundred twelve thousand, thirteen".