12011012011 has 8 divisors (see below), whose sum is σ = 12132168048. Its totient is φ = 11889900000.

The previous prime is 12011011997. The next prime is 12011012047. The reversal of 12011012011 is 11021011021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12011012011 - 2⁵ = 12011011979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12011012071) 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 7 ways as a sum of consecutive naturals, for example, 993996 + ... + 1006006.

It is an arithmetic number, because the mean of its divisors is an integer number (1516521006).

Almost surely, 2^12011012011 is an apocalyptic number.

12011012011 is a deficient number, since it is larger than the sum of its proper divisors (121156037).

12011012011 is a wasteful number, since it uses less digits than its factorization.

12011012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22013.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12011012011 its reverse (11021011021), we get a palindrome (23032023032).

The spelling of 12011012011 in words is "twelve billion, eleven million, twelve thousand, eleven".