12011122231013 has 4 divisors (see below), whose sum is σ = 12017335953708. Its totient is φ = 12004908508320.

The previous prime is 12011122231007. The next prime is 12011122231019. The reversal of 12011122231013 is 31013222111021.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12011122231007) and next prime (12011122231019).

It can be written as a sum of positive squares in 2 ways, for example, as 10776138986209 + 1234983244804 = 3282703^2 + 1111298^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011122231013 - 2⁴ = 12011122230997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011122231019) 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 3 ways as a sum of consecutive naturals, for example, 3106858448 + ... + 3106862313.

It is an arithmetic number, because the mean of its divisors is an integer number (3004333988427).

Almost surely, 2^{12011122231013} is an apocalyptic number.

It is an amenable number.

12011122231013 is a deficient number, since it is larger than the sum of its proper divisors (6213722695).

12011122231013 is an equidigital number, since it uses as much as digits as its factorization.

12011122231013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6213722694.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 12011122231013 its reverse (31013222111021), we get a palindrome (43024344342034).

The spelling of 12011122231013 in words is "twelve trillion, eleven billion, one hundred twenty-two million, two hundred thirty-one thousand, thirteen".