12001223211 has 8 divisors (see below), whose sum is σ = 16004871120. Its totient is φ = 7999195392.

The previous prime is 12001223203. The next prime is 12001223237. The reversal of 12001223211 is 11232210021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12001223211 - 2³ = 12001223203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12001223011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387630 + ... + 417443.

It is an arithmetic number, because the mean of its divisors is an integer number (2000608890).

Almost surely, 2^12001223211 is an apocalyptic number.

12001223211 is a deficient number, since it is larger than the sum of its proper divisors (4003647909).

12001223211 is an equidigital number, since it uses as much as digits as its factorization.

12001223211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810045.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12001223211 its reverse (11232210021), we get a palindrome (23233433232).

The spelling of 12001223211 in words is "twelve billion, one million, two hundred twenty-three thousand, two hundred eleven".