2102120011 has 2 divisors, whose sum is σ = 2102120012. Its totient is φ = 2102120010.

The previous prime is 2102119997. The next prime is 2102120017. The reversal of 2102120011 is 1100212012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2102120011 - 2⁹ = 2102119499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2102120011.

It is not a weakly prime, because it can be changed into another prime (2102120017) 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, 1051060005 + 1051060006.

It is an arithmetic number, because the mean of its divisors is an integer number (1051060006).

Almost surely, 2^2102120011 is an apocalyptic number.

2102120011 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102120011 is an equidigital number, since it uses as much as digits as its factorization.

2102120011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 2102120011 is about 45848.8823309795. The cubic root of 2102120011 is about 1281.0099473458.

Adding to 2102120011 its reverse (1100212012), we get a palindrome (3202332023).

The spelling of 2102120011 in words is "two billion, one hundred two million, one hundred twenty thousand, eleven".