11003321020 has 12 divisors (see below), whose sum is σ = 23106974184. Its totient is φ = 4401328400.

The previous prime is 11003320973. The next prime is 11003321029. The reversal of 11003321020 is 2012330011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11003321029) 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, 275083006 + ... + 275083045.

It is an arithmetic number, because the mean of its divisors is an integer number (1925581182).

Almost surely, 2^11003321020 is an apocalyptic number.

11003321020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11003321020 is an abundant number, since it is smaller than the sum of its proper divisors (12103653164).

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

11003321020 is a wasteful number, since it uses less digits than its factorization.

11003321020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550166060 (or 550166058 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 11003321020 its reverse (2012330011), we get a palindrome (13015651031).

The spelling of 11003321020 in words is "eleven billion, three million, three hundred twenty-one thousand, twenty".