12010001011 has 4 divisors (see below), whose sum is σ = 12532174992. Its totient is φ = 11487827032.

The previous prime is 12010000957. The next prime is 12010001027. The reversal of 12010001011 is 11010001021.

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 12010001011 - 2¹¹ = 12009998963 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12010000985 and 12010001003.

It is not an unprimeable number, because it can be changed into a prime (12010001071) 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, 261086956 + ... + 261087001.

It is an arithmetic number, because the mean of its divisors is an integer number (3133043748).

Almost surely, 2^12010001011 is an apocalyptic number.

12010001011 is a deficient number, since it is larger than the sum of its proper divisors (522173981).

12010001011 is an equidigital number, since it uses as much as digits as its factorization.

12010001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522173980.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 12010001011 its reverse (11010001021), we get a palindrome (23020002032).

The spelling of 12010001011 in words is "twelve billion, ten million, one thousand, eleven".