12011212220011 has 4 divisors (see below), whose sum is σ = 12025528326000. Its totient is φ = 11996896114024.

The previous prime is 12011212219997. The next prime is 12011212220017. The reversal of 12011212220011 is 11002221211021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12011212220011 - 2⁷ = 12011212219883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12011212220017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7158051736 + ... + 7158053413.

It is an arithmetic number, because the mean of its divisors is an integer number (3006382081500).

Almost surely, 2^{12011212220011} is an apocalyptic number.

12011212220011 is a deficient number, since it is larger than the sum of its proper divisors (14316105989).

12011212220011 is an equidigital number, since it uses as much as digits as its factorization.

12011212220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14316105988.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12011212220011 its reverse (11002221211021), we get a palindrome (23013433431032).

The spelling of 12011212220011 in words is "twelve trillion, eleven billion, two hundred twelve million, two hundred twenty thousand, eleven".