11215123241 has 4 divisors (see below), whose sum is σ = 12817283712. Its totient is φ = 9612962772.

The previous prime is 11215123211. The next prime is 11215123253. The reversal of 11215123241 is 14232151211.

11215123241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-11215123241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11215123211) 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 in 3 ways as a sum of consecutive naturals, for example, 801080225 + ... + 801080238.

It is an arithmetic number, because the mean of its divisors is an integer number (3204320928).

Almost surely, 2^11215123241 is an apocalyptic number.

It is an amenable number.

11215123241 is a deficient number, since it is larger than the sum of its proper divisors (1602160471).

11215123241 is an equidigital number, since it uses as much as digits as its factorization.

11215123241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602160470.

The product of its digits is 480, while the sum is 23.

Adding to 11215123241 its reverse (14232151211), we get a palindrome (25447274452).

The spelling of 11215123241 in words is "eleven billion, two hundred fifteen million, one hundred twenty-three thousand, two hundred forty-one".