12211003 has 4 divisors (see below), whose sum is σ = 13955440. Its totient is φ = 10466568.

The previous prime is 12210983. The next prime is 12211009. The reversal of 12211003 is 30011221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30011221 = 41 ⋅731981.

It is not a de Polignac number, because 12211003 - 2⁵ = 12210971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12211009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 872208 + ... + 872221.

It is an arithmetic number, because the mean of its divisors is an integer number (3488860).

Almost surely, 2^12211003 is an apocalyptic number.

12211003 is a deficient number, since it is larger than the sum of its proper divisors (1744437).

12211003 is an equidigital number, since it uses as much as digits as its factorization.

12211003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1744436.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 12211003 is about 3494.4245592086. The cubic root of 12211003 is about 230.2769379928.

Adding to 12211003 its reverse (30011221), we get a palindrome (42222224).

The spelling of 12211003 in words is "twelve million, two hundred eleven thousand, three".