12012122212211 has 6 divisors (see below), whose sum is σ = 13203407059836. Its totient is φ = 10920111101900.

The previous prime is 12012122212201. The next prime is 12012122212213. The reversal of 12012122212211 is 11221222121021.

It is a de Polignac number, because none of the positive numbers 2^k-12012122212211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12012122212213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49636868525 + ... + 49636868766.

It is an arithmetic number, because the mean of its divisors is an integer number (2200567843306).

Almost surely, 2^{12012122212211} is an apocalyptic number.

12012122212211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12012122212211 is a deficient number, since it is larger than the sum of its proper divisors (1191284847625).

12012122212211 is an equidigital number, since it uses as much as digits as its factorization.

12012122212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99273737313 (or 99273737302 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12012122212211 its reverse (11221222121021), we get a palindrome (23233344333232).

The spelling of 12012122212211 in words is "twelve trillion, twelve billion, one hundred twenty-two million, two hundred twelve thousand, two hundred eleven".