11113021321 has 4 divisors (see below), whose sum is σ = 11697917200. Its totient is φ = 10528125444.

The previous prime is 11113021319. The next prime is 11113021327. The reversal of 11113021321 is 12312031111.

It is a happy number.

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: 12312031111 = 5851 ⋅2104261.

It is a cyclic number.

It is not a de Polignac number, because 11113021321 - 2¹ = 11113021319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11113021295 and 11113021304.

It is not an unprimeable number, because it can be changed into a prime (11113021327) 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, 292447911 + ... + 292447948.

It is an arithmetic number, because the mean of its divisors is an integer number (2924479300).

Almost surely, 2^11113021321 is an apocalyptic number.

It is an amenable number.

11113021321 is a deficient number, since it is larger than the sum of its proper divisors (584895879).

11113021321 is an equidigital number, since it uses as much as digits as its factorization.

11113021321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584895878.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11113021321 its reverse (12312031111), we get a palindrome (23425052432).

The spelling of 11113021321 in words is "eleven billion, one hundred thirteen million, twenty-one thousand, three hundred twenty-one".