12113401021 has 2 divisors, whose sum is σ = 12113401022. Its totient is φ = 12113401020.

The previous prime is 12113401009. The next prime is 12113401081. The reversal of 12113401021 is 12010431121.

12113401021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11001912100 + 1111488921 = 104890^2 + 33339^2 .

It is a cyclic number.

It is not a de Polignac number, because 12113401021 - 2⁵ = 12113400989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12113400986 and 12113401004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12113401081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6056700510 + 6056700511.

It is an arithmetic number, because the mean of its divisors is an integer number (6056700511).

Almost surely, 2^12113401021 is an apocalyptic number.

It is an amenable number.

12113401021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12113401021 is an equidigital number, since it uses as much as digits as its factorization.

12113401021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12113401021 its reverse (12010431121), we get a palindrome (24123832142).

The spelling of 12113401021 in words is "twelve billion, one hundred thirteen million, four hundred one thousand, twenty-one".