11102012111 has 2 divisors, whose sum is σ = 11102012112. Its totient is φ = 11102012110.

The previous prime is 11102012099. The next prime is 11102012137. The reversal of 11102012111 is 11121020111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11102012111 - 2²² = 11097817807 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 11102012092 and 11102012101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11102011111) 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, 5551006055 + 5551006056.

It is an arithmetic number, because the mean of its divisors is an integer number (5551006056).

Almost surely, 2^11102012111 is an apocalyptic number.

11102012111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11102012111 is an equidigital number, since it uses as much as digits as its factorization.

11102012111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11102012111 its reverse (11121020111), we get a palindrome (22223032222).

The spelling of 11102012111 in words is "eleven billion, one hundred two million, twelve thousand, one hundred eleven".