12211303 has 16 divisors (see below), whose sum is σ = 13732096. Its totient is φ = 10782720.

The previous prime is 12211279. The next prime is 12211307. The reversal of 12211303 is 30311221.

It is not a de Polignac number, because 12211303 - 2⁹ = 12210791 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211307) 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 in 15 ways as a sum of consecutive naturals, for example, 63175 + ... + 63367.

It is an arithmetic number, because the mean of its divisors is an integer number (858256).

Almost surely, 2^12211303 is an apocalyptic number.

12211303 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12211303 is a deficient number, since it is larger than the sum of its proper divisors (1520793).

12211303 is a wasteful number, since it uses less digits than its factorization.

12211303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 12211303 is about 3494.4674844674. The cubic root of 12211303 is about 230.2788237924.

Adding to 12211303 its reverse (30311221), we get a palindrome (42522524).

The spelling of 12211303 in words is "twelve million, two hundred eleven thousand, three hundred three".