11003001820 has 12 divisors (see below), whose sum is σ = 23106303864. Its totient is φ = 4401200720.

The previous prime is 11003001811. The next prime is 11003001829. The reversal of 11003001820 is 2810030011.

It is an interprime number because it is at equal distance from previous prime (11003001811) and next prime (11003001829).

It is a junction number, because it is equal to n+sod(n) for n = 11003001794 and 11003001803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11003001829) 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, 275075026 + ... + 275075065.

It is an arithmetic number, because the mean of its divisors is an integer number (1925525322).

Almost surely, 2^11003001820 is an apocalyptic number.

11003001820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11003001820 is an abundant number, since it is smaller than the sum of its proper divisors (12103302044).

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

11003001820 is a wasteful number, since it uses less digits than its factorization.

11003001820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550150100 (or 550150098 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11003001820 its reverse (2810030011), we get a palindrome (13813031831).

The spelling of 11003001820 in words is "eleven billion, three million, one thousand, eight hundred twenty".