12012221220011 has 4 divisors (see below), whose sum is σ = 12013340833800. Its totient is φ = 12011101606224.

The previous prime is 12012221219989. The next prime is 12012221220107. The reversal of 12012221220011 is 11002212221021.

12012221220011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12012221220011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12012221229011) 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, 559790801 + ... + 559812258.

It is an arithmetic number, because the mean of its divisors is an integer number (3003335208450).

Almost surely, 2^{12012221220011} is an apocalyptic number.

12012221220011 is a deficient number, since it is larger than the sum of its proper divisors (1119613789).

12012221220011 is a wasteful number, since it uses less digits than its factorization.

12012221220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119613788.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12012221220011 its reverse (11002212221021), we get a palindrome (23014433441032).

The spelling of 12012221220011 in words is "twelve trillion, twelve billion, two hundred twenty-one million, two hundred twenty thousand, eleven".