3120200112221 has 2 divisors, whose sum is σ = 3120200112222. Its totient is φ = 3120200112220.

The previous prime is 3120200112187. The next prime is 3120200112331. The reversal of 3120200112221 is 1222110020213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2261973888196 + 858226224025 = 1503986^2 + 926405^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3120200112221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3120200112221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3120200112721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560100056110 + 1560100056111.

It is an arithmetic number, because the mean of its divisors is an integer number (1560100056111).

Almost surely, 2^{3120200112221} is an apocalyptic number.

It is an amenable number.

3120200112221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3120200112221 is an equidigital number, since it uses as much as digits as its factorization.

3120200112221 is an evil number, because the sum of its binary digits is even.

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

Adding to 3120200112221 its reverse (1222110020213), we get a palindrome (4342310132434).

The spelling of 3120200112221 in words is "three trillion, one hundred twenty billion, two hundred million, one hundred twelve thousand, two hundred twenty-one".