12001001011 has 2 divisors, whose sum is σ = 12001001012. Its totient is φ = 12001001010.

The previous prime is 12001000997. The next prime is 12001001053. The reversal of 12001001011 is 11010010021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12001001011 - 2⁹ = 12001000499 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12001000985 and 12001001003.

It is not a weakly prime, because it can be changed into another prime (12001001611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000500505 + 6000500506.

It is an arithmetic number, because the mean of its divisors is an integer number (6000500506).

Almost surely, 2^12001001011 is an apocalyptic number.

12001001011 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001001011 is an equidigital number, since it uses as much as digits as its factorization.

12001001011 is an evil number, because the sum of its binary digits is even.

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

Adding to 12001001011 its reverse (11010010021), we get a palindrome (23011011032).

It can be divided in two parts, 120010010 and 11, that added together give a palindrome (120010021).

The spelling of 12001001011 in words is "twelve billion, one million, one thousand, eleven".