12012011021011 has 16 divisors (see below), whose sum is σ = 12728964259840. Its totient is φ = 11303543908800.

The previous prime is 12012011020949. The next prime is 12012011021029. The reversal of 12012011021011 is 11012011021021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12012011021011 - 2¹⁷ = 12012010889939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12012011020982 and 12012011021000.

It is not an unprimeable number, because it can be changed into a prime (12012011021071) 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 15 ways as a sum of consecutive naturals, for example, 37663231 + ... + 37980823.

It is an arithmetic number, because the mean of its divisors is an integer number (795560266240).

Almost surely, 2^{12012011021011} is an apocalyptic number.

12012011021011 is a deficient number, since it is larger than the sum of its proper divisors (716953238829).

12012011021011 is a wasteful number, since it uses less digits than its factorization.

12012011021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330946.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12012011021011 its reverse (11012011021021), we get a palindrome (23024022042032).

The spelling of 12012011021011 in words is "twelve trillion, twelve billion, eleven million, twenty-one thousand, eleven".