12411115021 has 4 divisors (see below), whose sum is σ = 12411407452. Its totient is φ = 12410822592.

The previous prime is 12411114971. The next prime is 12411115037. The reversal of 12411115021 is 12051111421.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8600522121 + 3810592900 = 92739^2 + 61730^2 .

It is a cyclic number.

It is not a de Polignac number, because 12411115021 - 2⁹ = 12411114509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12411115021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12411115051) 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, 68940 + ... + 171973.

It is an arithmetic number, because the mean of its divisors is an integer number (3102851863).

Almost surely, 2^12411115021 is an apocalyptic number.

It is an amenable number.

12411115021 is a deficient number, since it is larger than the sum of its proper divisors (292431).

12411115021 is an equidigital number, since it uses as much as digits as its factorization.

12411115021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292430.

The product of its (nonzero) digits is 80, while the sum is 19.

Adding to 12411115021 its reverse (12051111421), we get a palindrome (24462226442).

The spelling of 12411115021 in words is "twelve billion, four hundred eleven million, one hundred fifteen thousand, twenty-one".