2021111210113 has 2 divisors, whose sum is σ = 2021111210114. Its totient is φ = 2021111210112.

The previous prime is 2021111210071. The next prime is 2021111210197. The reversal of 2021111210113 is 3110121111202.

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., 1692205519104 + 328905691009 = 1300848^2 + 573503^2 .

It is a cyclic number.

It is not a de Polignac number, because 2021111210113 - 2¹⁷ = 2021111079041 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021111217113) 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, 1010555605056 + 1010555605057.

It is an arithmetic number, because the mean of its divisors is an integer number (1010555605057).

Almost surely, 2^{2021111210113} is an apocalyptic number.

It is an amenable number.

2021111210113 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021111210113 is an equidigital number, since it uses as much as digits as its factorization.

2021111210113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 2021111210113 its reverse (3110121111202), we get a palindrome (5131232321315).

The spelling of 2021111210113 in words is "two trillion, twenty-one billion, one hundred eleven million, two hundred ten thousand, one hundred thirteen".