11221300321 has 12 divisors (see below), whose sum is σ = 14240018160. Its totient is φ = 8743869960.

The previous prime is 11221300301. The next prime is 11221300331. The reversal of 11221300321 is 12300312211.

It is a de Polignac number, because none of the positive numbers 2^k-11221300321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11221300295 and 11221300304.

It is not an unprimeable number, because it can be changed into a prime (11221300301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10408831 + ... + 10409908.

It is an arithmetic number, because the mean of its divisors is an integer number (1186668180).

Almost surely, 2^11221300321 is an apocalyptic number.

11221300321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11221300321 is a deficient number, since it is larger than the sum of its proper divisors (3018717839).

11221300321 is a wasteful number, since it uses less digits than its factorization.

11221300321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20818764 (or 20818757 counting only the distinct ones).

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

Adding to 11221300321 its reverse (12300312211), we get a palindrome (23521612532).

The spelling of 11221300321 in words is "eleven billion, two hundred twenty-one million, three hundred thousand, three hundred twenty-one".