2011111120913 has 2 divisors, whose sum is σ = 2011111120914. Its totient is φ = 2011111120912.

The previous prime is 2011111120901. The next prime is 2011111121023. The reversal of 2011111120913 is 3190211111102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1587945258769 + 423165862144 = 1260137^2 + 650512^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011111120913 - 2¹⁸ = 2011110858769 is a prime.

It is not a weakly prime, because it can be changed into another prime (2011111120013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005555560456 + 1005555560457.

It is an arithmetic number, because the mean of its divisors is an integer number (1005555560457).

Almost surely, 2^{2011111120913} is an apocalyptic number.

It is an amenable number.

2011111120913 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011111120913 is an equidigital number, since it uses as much as digits as its factorization.

2011111120913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 23.

The spelling of 2011111120913 in words is "two trillion, eleven billion, one hundred eleven million, one hundred twenty thousand, nine hundred thirteen".