11103212111 has 2 divisors, whose sum is σ = 11103212112. Its totient is φ = 11103212110.

The previous prime is 11103212101. The next prime is 11103212149. The reversal of 11103212111 is 11121230111.

It is a weak prime.

It is an emirp because it is prime and its reverse (11121230111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11103212111 - 2⁶ = 11103212047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11103212101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5551606055 + 5551606056.

It is an arithmetic number, because the mean of its divisors is an integer number (5551606056).

Almost surely, 2^11103212111 is an apocalyptic number.

11103212111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11103212111 is an equidigital number, since it uses as much as digits as its factorization.

11103212111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 11103212111 its reverse (11121230111), we get a palindrome (22224442222).

The spelling of 11103212111 in words is "eleven billion, one hundred three million, two hundred twelve thousand, one hundred eleven".