2111201123611 has 2 divisors, whose sum is σ = 2111201123612. Its totient is φ = 2111201123610.

The previous prime is 2111201123557. The next prime is 2111201123651. The reversal of 2111201123611 is 1163211021112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2111201123611 - 2²⁵ = 2111167569179 is a prime.

It is not a weakly prime, because it can be changed into another prime (2111201123651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055600561805 + 1055600561806.

It is an arithmetic number, because the mean of its divisors is an integer number (1055600561806).

Almost surely, 2^{2111201123611} is an apocalyptic number.

2111201123611 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111201123611 is an equidigital number, since it uses as much as digits as its factorization.

2111201123611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 2111201123611 its reverse (1163211021112), we get a palindrome (3274412144723).

The spelling of 2111201123611 in words is "two trillion, one hundred eleven billion, two hundred one million, one hundred twenty-three thousand, six hundred eleven".