12311202011 has 4 divisors (see below), whose sum is σ = 12312856032. Its totient is φ = 12309547992.

The previous prime is 12311201977. The next prime is 12311202017. The reversal of 12311202011 is 11020211321.

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 12311202011 - 2¹⁸ = 12310939867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12311202017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 815795 + ... + 830748.

It is an arithmetic number, because the mean of its divisors is an integer number (3078214008).

Almost surely, 2^12311202011 is an apocalyptic number.

12311202011 is a deficient number, since it is larger than the sum of its proper divisors (1654021).

12311202011 is an equidigital number, since it uses as much as digits as its factorization.

12311202011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654020.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 12311202011 its reverse (11020211321), we get a palindrome (23331413332).

The spelling of 12311202011 in words is "twelve billion, three hundred eleven million, two hundred two thousand, eleven".