11013221320 has 32 divisors (see below), whose sum is σ = 24784615800. Its totient is φ = 4404423168.

The previous prime is 11013221309. The next prime is 11013221327. The reversal of 11013221320 is 2312231011.

It can be written as a sum of positive squares in 4 ways, for example, as 11009465476 + 3755844 = 104926^2 + 1938^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11013221294 and 11013221303.

It is not an unprimeable number, because it can be changed into a prime (11013221327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203362 + ... + 251758.

Almost surely, 2^11013221320 is an apocalyptic number.

11013221320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11013221320 is an abundant number, since it is smaller than the sum of its proper divisors (13771394480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11013221320 is a wasteful number, since it uses less digits than its factorization.

11013221320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54097 (or 54093 counting only the distinct ones).

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

Adding to 11013221320 its reverse (2312231011), we get a palindrome (13325452331).

The spelling of 11013221320 in words is "eleven billion, thirteen million, two hundred twenty-one thousand, three hundred twenty".