2113211030321 has 2 divisors, whose sum is σ = 2113211030322. Its totient is φ = 2113211030320.

The previous prime is 2113211030303. The next prime is 2113211030393. The reversal of 2113211030321 is 1230301123112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1138992679696 + 974218350625 = 1067236^2 + 987025^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2113211030321 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2113211030293 and 2113211030302.

It is not a weakly prime, because it can be changed into another prime (2113211020321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056605515160 + 1056605515161.

It is an arithmetic number, because the mean of its divisors is an integer number (1056605515161).

Almost surely, 2^{2113211030321} is an apocalyptic number.

It is an amenable number.

2113211030321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113211030321 is an equidigital number, since it uses as much as digits as its factorization.

2113211030321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 2113211030321 its reverse (1230301123112), we get a palindrome (3343512153433).

The spelling of 2113211030321 in words is "two trillion, one hundred thirteen billion, two hundred eleven million, thirty thousand, three hundred twenty-one".