12012122011011 has 4 divisors (see below), whose sum is σ = 16016162681352. Its totient is φ = 8008081340672.

The previous prime is 12012122010979. The next prime is 12012122011027. The reversal of 12012122011011 is 11011022121021.

It is a happy number.

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 12012122011011 - 2⁵ = 12012122010979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12012122011051) 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 3 ways as a sum of consecutive naturals, for example, 2002020335166 + ... + 2002020335171.

It is an arithmetic number, because the mean of its divisors is an integer number (4004040670338).

Almost surely, 2^{12012122011011} is an apocalyptic number.

12012122011011 is a deficient number, since it is larger than the sum of its proper divisors (4004040670341).

12012122011011 is an equidigital number, since it uses as much as digits as its factorization.

12012122011011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4004040670340.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12012122011011 its reverse (11011022121021), we get a palindrome (23023144132032).

The spelling of 12012122011011 in words is "twelve trillion, twelve billion, one hundred twenty-two million, eleven thousand, eleven".