12012012211 has 8 divisors (see below), whose sum is σ = 12684116880. Its totient is φ = 11343896928.

The previous prime is 12012012191. The next prime is 12012012217. The reversal of 12012012211 is 11221021021.

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

It is a cyclic number.

It is not a de Polignac number, because 12012012211 - 2⁷ = 12012012083 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12012012191 and 12012012200.

It is not an unprimeable number, because it can be changed into a prime (12012012217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 991156 + ... + 1003201.

It is an arithmetic number, because the mean of its divisors is an integer number (1585514610).

Almost surely, 2^12012012211 is an apocalyptic number.

12012012211 is a deficient number, since it is larger than the sum of its proper divisors (672104669).

12012012211 is a wasteful number, since it uses less digits than its factorization.

12012012211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1994693.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12012012211 its reverse (11221021021), we get a palindrome (23233033232).

The spelling of 12012012211 in words is "twelve billion, twelve million, twelve thousand, two hundred eleven".