11211103 has 2 divisors, whose sum is σ = 11211104. Its totient is φ = 11211102.

The previous prime is 11211091. The next prime is 11211131. The reversal of 11211103 is 30111211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11211103 - 2⁵ = 11211071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11211103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11211133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605551 + 5605552.

It is an arithmetic number, because the mean of its divisors is an integer number (5605552).

Almost surely, 2^11211103 is an apocalyptic number.

11211103 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211103 is an equidigital number, since it uses as much as digits as its factorization.

11211103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 11211103 is about 3348.2985231308. The cubic root of 11211103 is about 223.8116973518.

Adding to 11211103 its reverse (30111211), we get a palindrome (41322314).

The spelling of 11211103 in words is "eleven million, two hundred eleven thousand, one hundred three".