11413311121 has 4 divisors (see below), whose sum is σ = 11600414644. Its totient is φ = 11226207600.

The previous prime is 11413311103. The next prime is 11413311149. The reversal of 11413311121 is 12111331411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12111331411 = 53 ⋅228515687.

It can be written as a sum of positive squares in 2 ways, for example, as 713477521 + 10699833600 = 26711^2 + 103440^2 .

It is a cyclic number.

It is not a de Polignac number, because 11413311121 - 2⁹ = 11413310609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11413311101) 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, 93551670 + ... + 93551791.

It is an arithmetic number, because the mean of its divisors is an integer number (2900103661).

Almost surely, 2^11413311121 is an apocalyptic number.

It is an amenable number.

11413311121 is a deficient number, since it is larger than the sum of its proper divisors (187103523).

11413311121 is an equidigital number, since it uses as much as digits as its factorization.

11413311121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187103522.

The product of its digits is 72, while the sum is 19.

Adding to 11413311121 its reverse (12111331411), we get a palindrome (23524642532).

The spelling of 11413311121 in words is "eleven billion, four hundred thirteen million, three hundred eleven thousand, one hundred twenty-one".