12001112211 has 32 divisors (see below), whose sum is σ = 17840848896. Its totient is φ = 7113348000.

The previous prime is 12001112203. The next prime is 12001112251. The reversal of 12001112211 is 11221110021.

It is not a de Polignac number, because 12001112211 - 2³ = 12001112203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12001112251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3303366 + ... + 3306996.

It is an arithmetic number, because the mean of its divisors is an integer number (557526528).

Almost surely, 2^12001112211 is an apocalyptic number.

12001112211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12001112211 is a deficient number, since it is larger than the sum of its proper divisors (5839736685).

12001112211 is a wasteful number, since it uses less digits than its factorization.

12001112211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5823.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12001112211 its reverse (11221110021), we get a palindrome (23222222232).

The spelling of 12001112211 in words is "twelve billion, one million, one hundred twelve thousand, two hundred eleven".