12012122212011 has 24 divisors (see below), whose sum is σ = 18253371006000. Its totient is φ = 7600890881472.

The previous prime is 12012122211997. The next prime is 12012122212061. The reversal of 12012122212011 is 11021222121021.

12012122212011 is a `hidden beast` number, since 1 + 201 + 212 + 221 + 20 + 11 = 666.

12012122212011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12012122212011 - 2²¹ = 12012120114859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12012122212061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 390013896 + ... + 390044693.

It is an arithmetic number, because the mean of its divisors is an integer number (760557125250).

Almost surely, 2^{12012122212011} is an apocalyptic number.

12012122212011 is a deficient number, since it is larger than the sum of its proper divisors (6241248793989).

12012122212011 is a wasteful number, since it uses less digits than its factorization.

12012122212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780058683 (or 780058680 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12012122212011 its reverse (11021222121021), we get a palindrome (23033344333032).

The spelling of 12012122212011 in words is "twelve trillion, twelve billion, one hundred twenty-two million, two hundred twelve thousand, eleven".