12123211003 has 12 divisors (see below), whose sum is σ = 13556100760. Its totient is φ = 10809545472.

The previous prime is 12123210991. The next prime is 12123211007. The reversal of 12123211003 is 30011232121.

It is a de Polignac number, because none of the positive numbers 2^k-12123211003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12123211007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1098426 + ... + 1109407.

Almost surely, 2^12123211003 is an apocalyptic number.

12123211003 is a deficient number, since it is larger than the sum of its proper divisors (1432889757).

12123211003 is a wasteful number, since it uses less digits than its factorization.

12123211003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2207886 (or 2207869 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12123211003 its reverse (30011232121), we get a palindrome (42134443124).

The spelling of 12123211003 in words is "twelve billion, one hundred twenty-three million, two hundred eleven thousand, three".