11321220113 has 4 divisors (see below), whose sum is σ = 12938537280. Its totient is φ = 9703902948.

The previous prime is 11321220109. The next prime is 11321220217. The reversal of 11321220113 is 31102212311.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31102212311 = 3623 ⋅8584657.

It is a cyclic number.

It is not a de Polignac number, because 11321220113 - 2² = 11321220109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11321220091 and 11321220100.

It is not an unprimeable number, because it can be changed into a prime (11321220613) 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, 808658573 + ... + 808658586.

It is an arithmetic number, because the mean of its divisors is an integer number (3234634320).

Almost surely, 2^11321220113 is an apocalyptic number.

It is an amenable number.

11321220113 is a deficient number, since it is larger than the sum of its proper divisors (1617317167).

11321220113 is an equidigital number, since it uses as much as digits as its factorization.

11321220113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1617317166.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11321220113 its reverse (31102212311), we get a palindrome (42423432424).

The spelling of 11321220113 in words is "eleven billion, three hundred twenty-one million, two hundred twenty thousand, one hundred thirteen".