12020042011 has 4 divisors (see below), whose sum is σ = 12136741552. Its totient is φ = 11903342472.

The previous prime is 12020041993. The next prime is 12020042033. The reversal of 12020042011 is 11024002021.

It is a happy number.

12020042011 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, and also an emirpimes, since its reverse is a distinct semiprime: 11024002021 = 647 ⋅17038643.

It is a cyclic number.

It is not a de Polignac number, because 12020042011 - 2⁹ = 12020041499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12020041982 and 12020042000.

It is not an unprimeable number, because it can be changed into a prime (12020042051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58349616 + ... + 58349821.

It is an arithmetic number, because the mean of its divisors is an integer number (3034185388).

Almost surely, 2^12020042011 is an apocalyptic number.

12020042011 is a deficient number, since it is larger than the sum of its proper divisors (116699541).

12020042011 is a wasteful number, since it uses less digits than its factorization.

12020042011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116699540.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12020042011 its reverse (11024002021), we get a palindrome (23044044032).

The spelling of 12020042011 in words is "twelve billion, twenty million, forty-two thousand, eleven".