2120344013 has 2 divisors, whose sum is σ = 2120344014. Its totient is φ = 2120344012.

The previous prime is 2120344001. The next prime is 2120344043. The reversal of 2120344013 is 3104430212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2118024484 + 2319529 = 46022^2 + 1523^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120344013 - 2⁴ = 2120343997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120344043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060172006 + 1060172007.

It is an arithmetic number, because the mean of its divisors is an integer number (1060172007).

Almost surely, 2^2120344013 is an apocalyptic number.

It is an amenable number.

2120344013 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120344013 is an equidigital number, since it uses as much as digits as its factorization.

2120344013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2120344013 is about 46047.1933238064. The cubic root of 2120344013 is about 1284.7011398019.

Adding to 2120344013 its reverse (3104430212), we get a palindrome (5224774225).

The spelling of 2120344013 in words is "two billion, one hundred twenty million, three hundred forty-four thousand, thirteen".