11413113221 has 4 divisors (see below), whose sum is σ = 11526114444. Its totient is φ = 11300112000.

The previous prime is 11413113161. The next prime is 11413113247. The reversal of 11413113221 is 12231131411.

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 7843050721 + 3570062500 = 88561^2 + 59750^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11413113221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11413113193 and 11413113202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11413118221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56500460 + ... + 56500661.

It is an arithmetic number, because the mean of its divisors is an integer number (2881528611).

Almost surely, 2^11413113221 is an apocalyptic number.

It is an amenable number.

11413113221 is a deficient number, since it is larger than the sum of its proper divisors (113001223).

11413113221 is a wasteful number, since it uses less digits than its factorization.

11413113221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113001222.

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

Adding to 11413113221 its reverse (12231131411), we get a palindrome (23644244632).

The spelling of 11413113221 in words is "eleven billion, four hundred thirteen million, one hundred thirteen thousand, two hundred twenty-one".