12010011011 has 4 divisors (see below), whose sum is σ = 12044424000. Its totient is φ = 11975598024.

The previous prime is 12010011007. The next prime is 12010011037. The reversal of 12010011011 is 11011001021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11011001021 = 313 ⋅35178917.

It is a cyclic number.

It is not a de Polignac number, because 12010011011 - 2² = 12010011007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12010011011.

It is not an unprimeable number, because it can be changed into a prime (12010011001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17205971 + ... + 17206668.

It is an arithmetic number, because the mean of its divisors is an integer number (3011106000).

Almost surely, 2^12010011011 is an apocalyptic number.

12010011011 is a deficient number, since it is larger than the sum of its proper divisors (34412989).

12010011011 is an equidigital number, since it uses as much as digits as its factorization.

12010011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34412988.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 12010011011 its reverse (11011001021), we get a palindrome (23021012032).

The spelling of 12010011011 in words is "twelve billion, ten million, eleven thousand, eleven".