11220310321 has 4 divisors (see below), whose sum is σ = 12240338544. Its totient is φ = 10200282100.

The previous prime is 11220310319. The next prime is 11220310333. The reversal of 11220310321 is 12301302211.

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 cyclic number.

It is not a de Polignac number, because 11220310321 - 2¹ = 11220310319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11220310295 and 11220310304.

It is not an unprimeable number, because it can be changed into a prime (11220310721) 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, 510014095 + ... + 510014116.

It is an arithmetic number, because the mean of its divisors is an integer number (3060084636).

Almost surely, 2^11220310321 is an apocalyptic number.

11220310321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11220310321 is a deficient number, since it is larger than the sum of its proper divisors (1020028223).

11220310321 is a wasteful number, since it uses less digits than its factorization.

11220310321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020028222.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11220310321 its reverse (12301302211), we get a palindrome (23521612532).

The spelling of 11220310321 in words is "eleven billion, two hundred twenty million, three hundred ten thousand, three hundred twenty-one".