12012113211 has 32 divisors (see below), whose sum is σ = 18820171776. Its totient is φ = 6671808000.

The previous prime is 12012113173. The next prime is 12012113257. The reversal of 12012113211 is 11231121021.

It is not a de Polignac number, because 12012113211 - 2⁹ = 12012112699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12012113111) 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, 207591 + ... + 259071.

It is an arithmetic number, because the mean of its divisors is an integer number (588130368).

Almost surely, 2^12012113211 is an apocalyptic number.

12012113211 is a deficient number, since it is larger than the sum of its proper divisors (6808058565).

12012113211 is a wasteful number, since it uses less digits than its factorization.

12012113211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51803.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 12012113211 its reverse (11231121021), we get a palindrome (23243234232).

The spelling of 12012113211 in words is "twelve billion, twelve million, one hundred thirteen thousand, two hundred eleven".